Despite Coco being fully playable in all three games. Crash is still the only one to fight all of the bosses. However, this makes some sense since it shows, despite now matching physical abilities, they are still to some degree a Brains and Brawn division. In games since the trilogy, Crash is more used to combat, and is also a Smarter Than They LookGuile Hero. Coco's intellect is more academic and in regards to tech inventory, so the Warped N Gin fight remains solely her's.
In the original version of Warped when you defeat N.Gin and his mech explodes, he's hurled into space in a similar manner to his defeat in Cortex Strikes Back, complete with him shouting "NOT AGAIN!". Although he doesn't appear in the game after his fight, N.Gin survived being thrown into space the first time without a spacesuit so it's obvious he was fine after his second defeat. In the N.Sane Trilogy, however, the mech just explodes. You don't see him being sent flying into space or hear him screaming. Coupled with not appearing at all after the fight, this makes it appear that you just flat out KILLED him!
Thankfully he's fine, as he's a character in the remastered CTR (which takes place after the events of Warped owing to the appearances of several characters from that game).
