Dark Laser was originally just a toy, the leader of a series of toys modeled after the Empire from Star Wars, with Dark Laser himself being a parody of Darth Vader. When Timmy's magic copy machine brought Dark Laser to life, he quickly set off to cause destruction in Dimmsdale. After being defeated by Timmy, Dark Laser swore revenge, and has resided in space actively trying to trick Timmy Turner and lure the boy to him so that he can destroy him. It is not clear if Dark Laser is an alien, a toy, or a robot, though he considers his attacks on Earth as an "invasion". Dark Laser also has a toy dog called Flipsie, which was also made by Timmy in the magic copier before Dark Laser stole him, and made Flipsie his faithful companion.
Dark Laser wears a black space suit, a large cape and a helmet, and speaks in a deep voice, reminiscent of the real Darth Vader. It is unknown if he is a human, toy, or even an alien, although the latter seems most likely as he has an army of space robots at his command, and wants to dominate Earth once Timmy Turner is out of the way. Dark Laser also has a variety of buttons on his suit which can transform him into different objects, such as a life raft, hinting that he may also be a giant living toy. This is similar to the Fake-i-fier. Timmy and Tootie use the threat of pressing these buttons on Dark Laser's suit against him.
He is evil, yet childish, doing wrongful deeds to extreme limits for reasons he cannot explain. Like most other villains, his own incompetence is usually his worst enemy more-so than Timmy. He also tends to do a weird laugh where he will mumble something quickly in between his laughter (usually repeating what he said a moment ago). Dark Laser showed a small shred of kindness toward Timmy by lending his spaceship to him to help find his family during "Wishology", although he was back to his old evil ways by the end of the special. Dark Laser also tends to switch to a more feminine personality when speaking to his toy, Flipsie, who he treats as a living being. Dark Laser also doesn't like people making fun of his irritable foul incompetence.
Dark Laser possess the "Dark Powers" which give him telekinesis and mind control powers. He also has an enormous army and much incredibly advanced technology at his disposal.
Dark Laser was first introduced in the episode "Hard Copy". When Timmy Turner used a Magic Copy Machine to wish up a magazine full of toys in the absence of his godparents, he wanted a life-sized version of the Dark Laser from Space Wars featured in the magazine. By adjusting a setting on the copier, Timmy made a copy of a Dark Laser toy as tall as an adult. After Timmy was momentarily distracted on trying to find his dad's magazines, Dark Laser came to life, and used the Magic Copy Machine to creature an army of droids and spaceships similar to those seen in the real-life Star Wars franchise. With the help of Cosmo and Wanda returning from Fairy World, Timmy was eventually able to defeat Dark Laser by using a similar toy-turned-life-sized spaceship. Dark Laser was defeated, and presumably turned into a poster, but moments later called Timmy on the phone, demanding the return of his beloved Flipsie, a toy flipping dog that would always accompany Dark Laser in later episodes.
He would later appear in "Escape from Unwish Island", where he and other unwished wishes helped Imaginary Gary to trap and defeat Timmy. Dark Laser was just a pawn in this scheme and had no major role or influence. At the end of the episode, Dark Laser and the other Unwishes let Timmy go in exchange for having a lot of Timmy clones on the island to beat up on and serve them. Dark Laser would later seemingly escape and amass an army in space to once again threaten Timmy and all of Earth, but how and why he did this is unknown.
Dark Laser formally returned in "The End of the Universe-ity". After being foiled constantly in his attempts to destroy Earth with his Death Ball (thanks to Timmy's godparents), a gigantic space station modeled after the Death Star from Star Wars, Dark Laser decides to trick Mr. and Mrs. Turner into thinking they've won a scholarship to his "Space University", luring the Turners to his Death Ball. This was part of a scheme by Dark Laser to recruit Timmy over to the dark side by using a special Dark Powers Suit, a magic suit similar to what Dark Laser wears, allowing Timmy to make wishes on his own unrestricted by Da Rules. Dark Laser's plan was to use the powers to corrupt Timmy, and then force him to destroy Earth himself. After "graduating" from Dark Laser's university, Timmy was brought to the bridge of the Death Ball where Dark Laser directed him to press a button to destroy Earth. Timmy resisted, and ripped out the button from the panel, turning on Dark Laser. After fighting his way out, Timmy kept the Dark Powers Suit in order to use it against Vicky for emergencies. A furious Dark Laser attempted to destroy the Earth again after replacing the button, but another quick wish by Timmy resulted in the destructive blast from the Death Ball to reflect off Earth and back to the Death Ball, destroying it all completely, but temporarily.
Dark Laser appeared yet again to threaten Timmy in "Dread 'N' Breakfast", after Mrs. Turner turned the Turner's house into a bed and breakfast. Dark Laser wanted to stay only because he wished to destroy Timmy, although the Turners were oblivious that he was actually a space alien. Dark Laser, along with Mr. Crocker and Tootie, chased Timmy throughout his house until he finally was fed up with them enough to fight them with a magic sock puppet army. Dark Laser and his Dark Troopers, storm trooper-like guards that follow him in some episodes, were all eventually incinerated into ash piles by the sock puppet monkeys, but Timmy quickly wished Dark Laser back to life because they had gone too far by killing him. Dark Laser quickly surrendered and then attempted to make a quick getaway. In this episode, Dark Laser's suit also has a button on his suit which, if pressed, can turn him into a raft.
Dark Laser was also a minor threat in the episode "Momnipresent".
In "Wishology", Dark Laser was also recruited in Timmy's army to battle the Darkness, specifically to find a powerful wand on the Blue Moon of Vegon. Dark Laser in particular was needed because of his access to spaceships. Timmy lured Dark Laser to Earth by creating an offensive video about him (called Fart Blazerwhich ironically was funny to everyone else except for him) and putting it on the Internet (TooYube, see below). Dark Laser also provided Timmy, Mr. Crocker, Vicky, and Mark Chang with special cold-resistant spacesuits which caused them to resemble Star Wars characters (Luke, Chewbacca, Leia, and R2-D2 respectively). Everyone but Timmy and Mark Chang were eventually corned and captured by Eliminators, but were later rescued by Cosmo, Wanda, Jorgen Von Strangle, and Timmy's friends, after they had been brought to Abracatraz. Dark Laser had little role throughout the rest of the trilogy.
In "Please Don't Feed The Turners", Dark Laser tricks the Turner family again by disguising himself as Doug Dimmadome, and then telling the Turners that they were selected to be the first family shot into space. The rocket ship took them to the Death Ball, were the Turners were promptly thrown into a jail-like alien zoo as the Human attraction. Dark Laser wanted to keep the Turners there for as long as it took to get the money to repair his Death Ball, which Timmy had destroyed repeatedly before. Mr. and Mrs. Turner became complacent due to the luxurious conditions of their new environment, but Timmy was not so lucky and was nearly eaten by Orcatron. Eventually Dark Laser is tricked into turning himself into Timmy using his suit, causing Dark Laser to get thrown into the Turner's cell instead of Timmy, who freed his family and then destroyed the Death Ball again for good measure.
In the special "Timmy's Secret Wish!", he was present on Timmy's trial. Interestingly, he attempted to defend Timmy, but he was cut short by Foop who wanted to prove that Timmy is a bad godchild. After this, Dark Laser was poofed away to Hocus Poconos.
In "When Losers Attack", after Timmy escaped from Mr. Crocker, Dark Laser was waiting for Timmy, frozen in the cold of space for a long time. Dark Laser abducted Timmy's ship, and when the elevator popped up, Timmy brought the bear that attacked Mr. Crocker earlier, and attacked Dark Laser. Later he went to the Cake N' Bacon, where he finds Mr. Crocker and Foop mad over Timmy. He finds out that Foop thinks they have a common bond, which Dark Laser points out as the hate of Timmy. He joined them, and tried to name the group "The Flipsies" before Foop brought the group under the name "L.O.S.E.R.S." Later the group used his Death Ball to abduct Timmy, who fell from his tree house that was cut by Mr. Turner. The group was tricked by Timmy Turner who has thrown Flipsie, tricking the whole group into falling to the black hole, including Dark Laser who forgot to tie the rope to the Death Ball, and they fell to Bakersfield. Timmy used the Death Ball to get back to Earth. When the group went back to the Cake N' Bacon and hired Vicky, he was doubtful of the decision, but soon changed his mind when she scared the bear that attacked the three of them. After some training from her, they go to attack Timmy, and he tries to destroy him with a laser but it misses and slings to a tree branch, falling on him. Later, Timmy is destroyed (by Vicky,) however Flipsie flips under Timmy's hat, meaning that it wasn't Timmy who got destroyed but Dark Laser, because Timmy wished the L.O.S.E.R.S. into looking like Timmy. The group met again in Cake N' Bacon after getting destroyed, Dark Laser among them.
In the sequel "Return of the L.O.S.E.R.S.", the team is back and they still wanted to destroy Timmy. Needless to say, they failed in this again. (Interestingly, this was his only villainous appearance this season.)
His next appearance was in "Clark Laser" where he became Timmy and Chloe's bodyguard after they saved his dog, Flipsie, from a truck. He protected from any threats. Laser also carried a dangerous alien predator that was chasing Cosmo and Wanda throughout the episode. At the end of the episode, Laser sent the alien predator after Crocker and Foop when he learned they were the ones who almost hit Flipsie with their car. He was a protagonist/good guy in the episode.
His last appearance was in the episode "Crockin' The House". He first appeared in a picture. In his Death Ball, he is sad that Flipsie won't flip. He is seen conversing with Foop here. Later on, he tries to destroy Crocker for not inviting him to his party. He gave this idea up, however, and then on he was seen dancing with Timmy, Foop and many other people. At the end of the episode, he claims that he hosts another party in his Death Ball while happy people follow Laser to his ship. He was a good guy/neutral character in this episode. Since the show ended, and Laser hadn't made another appearance since "Crockin' the House", he can be considered as a redeemed villain now since he didn't do anything villainous in his last two appearances.
In order to lure Dark Laser to Earth to use his spaceship in "Wishology", Timmy Turner created a TooYube parody of Dark Laser on the Internet called Fart Blazer. The video featured Dark Laser sticking his butt out and making fart noises with Pop Goes The Weasel being played as background music. The video reached over a million views in a matter of seconds. Although a lot of people (including Dark Laser's workers) liked the post due to its humorous and somewhat insulting content, Dark Laser wasn't amused at this (and right before he noticed it was Timmy who posted it, he demanded angrily who posted "these lies") and quickly came to Earth to destroy Timmy, but was convinced into helping him get to the Blue Moon of Vegon.