Is bloody gir really bloody

Yes. Bloody GIR was conceived by the creator of Invador ZIM who wanted to use it in one of his episodes. GIR is drenched in blood with his eyes glowing red, which signals that he's in combat mode. Nickelodeon would not allow this to be used on the show, so the creator of the show secretly inserted it into a few episodes. It is almost impossible to notice, because it is only visible for one frame and is very faded. Once Word of this started getting around, the Nickelodeon network decided to fire the creator of the show, resulting in no more new episodes of Invador ZIM. However, the few times the show plays today, Bloody GIR is still in those few episodes.