Invader Bio was the second member of the Hatena Invader Club. Bio created his personal S.I.R unit known as "B.I.R" as opposed to getting a general one. Bio was once a high ranking Irken Invader, but then began to see the Irken Army's ideals were too "stupid" as he puts it, so he left as a rogue Invader carrying what he could with him. Eventually, he was found on a planet not too far from Irk by Irken Soldiers, and was thrown off a cliff to a painful death, but 3 days afterwards B.I.R revived him. Bio lost an eye, and his original PAK was destroyed, but he is now alive. At this point, Bio is 137 years old, has a long lost brother, and a son.