Who wants to hear a crackpot theory about Tank that is truly wild and baseless speculation? Nobody? Too bad here it comes. So in Jim Zub's Thunderbolts he introduced a Cable knockoff called Gutsen Glory. He was a character whose origin was never explained, just that he was a cyborg (?) who was an asset that belonged to the US government. Forge notably used to make weapons for the government. So perhaps GG was his doing, and perhaps he needed to use GG, and perhaps he asked the government to allow him to use GG but they said no, so perhaps he stole GG and obscured his identity? I've connected the dots ...
♫ Her dog day's just begun♫