Humans of Earth, I come in peace. You need not fear me, I mean you no harm. However, it is important to note that most of you will not survive the next 24 hours. The few of you that do survive will be enslaved and experimented upon. You should, in no way, take any of this personally. It's just business. So, just to recap, I come in peace, I mean you no harm, and you all will die. Gallaxhar out.
Gallaxhar is the main antagonist of DreamWorks' 18th full-length animated feature film Monsters vs. Aliens. He is a squid-like alien life-form and the traitorous leader of the invading alien force trying to take over planet Earth.
In the Past, Gallaxhar destroyed his home planet for seemingly no reason but it was heavily implied that he experienced bad childhood and unhappy marriage, which he could not tolerate his wife desire to have children, leading to his desire to end his people. After the destruction of his home world, he escaped on his ship, putting himself into cryogenic sleep. He is awoken from his cryogenic sleep when his computer detects Quantonium on Earth, Gallaxhar then sends a Robot Probe to extract and bring it to him.
When the monsters defeat his probe, he almost sends another probe, but his computer tells him that the "carbon-based life-form" (Ginormica) is now too strong, and so that the Quantonium cannot be retrieved by a Robot.
He comes to Earth and sends a message to the citizens of Earth, then captures Ginormica, and in the process blasts Insectosaurus with his ship's phasoid cannon.
When Ginormica is on board the ship, she frees herself and Gallaxhar flees to his Extraction Chamber where he successfully gets the Quantonium out of Ginormica. He then uses the Quantonium to clone himself four times, this being enough to create an evil clone army of himself.
After Dr. Cockroach destroys his computer by stepping on the color buttons in the correct order while dancing, the self-destruct system sounds. He attempts to escape, but he is once again forced into combat with Ginormica. She then gets her Quantonium back and escapes on Insectosaurus (who is now a butterfly). Gallaxhar tries to escape in an escape-pod, but fails and is killed in the explosion of his ship.
Gallaxhar is truly egocentric, intelligent, manipulative and domineering. He is portrayed as a ruthless, oppressive and totalitarian dictator. Sometimes, Gallaxhar can get into arguments with the Computer. One of his most unmerciful and objectionable plans is when he tries to eliminate all life on Earth in order to repopulate it. He is also ridiculously genocidal, as he murdered his own species for seemingly ridiculous reasons, which implied to be bad upbringing and his wife nagging him to have kids.
"I will retrieve the quantonium myself, even if I have to rip it out of her body one cell at at time!"
"If you wanted to stop me, you should've done it when you possessed the Quantonium. Now you're nothing!!"
Gallaxhar threatening Susan.
Gallaxhar's crazy eyes.
Gallaxhar taunting Susan.
Gallaxhar begging for mercy.
"Let the birth of my new planet now called... Gallaxhar's... planet begin!"
"Wow. You really get around."
Gallaxhar accepting his coming death.
Gallaxhar's death as he is killed in the explosion of his ship.
Gallaxhar has the highest body count out of any DreamWorks villain, since he obliterated an entire planet and used a giant robot that possibly killed thousands.
He bears a resemblance to the aliens in the 1996 film Independence Day, in which they have a big head shaped like an oblong, with over a dozen tentacles in their backs. However, Gallaxhar has tentacles for legs.
Gallaxhar's mothership contains over 300 Robot Probes (100 in each bay).
Gallaxhar is Rainn Wilson's first voice acting role.