Doesn't he just like transform whenever? I really can't figure that animu out.
I've watched flcl through like 8 times now
he turns red whenever there is the attacking robots but he only turns into the gun when he eats Naota. this is becuase of Haruko hitting Canti on the back of the head in the first episode
Inside of Canti is the space pirate king Atomsk and Atomsk’s is the symbol thats on his tv face when he turns red. also Atomsk is a giant phoenix that can consume planets
Canti is a representation of naota's caring mature side when haruko shows up and Canti begins doing things for everybody who asks even if they don't treat him with respect.
there's also the Commander Amarao who is Naota's mental picture of what an adult is supposed to be. with that in mind Atomsk is a representation of what an Adult is supposed to be in a relationship. Naota learns from all of them. there's a lot to take from this show
one last thing Haruko isn't after atomsk in the show because she's in love. she just wants his power which ends up being physically manifested as a EB-0 1961 Gibson