A crazy AU. While my main Ginga AU consists on subtle changes or additions to the characters' personalities and capabilities, this one completely alters Sniper's post-GNG story and it establishes him as the "True Final Boss" of the Hougen storyline.
On this AU, Sniper is presumed dead for most of the time and "Murder S" is thought to be an entirely different character until the very end. This Murder S would have more wounds, etc, that would make his appearance differ more from GNG Sniper, and his scent would have somehow changed. He joins Hougen as his right hand but
Hougen is not aware of his past as Sniper. Murder S is also just using Hougen to kill his enemies, the Ohu dogs, and he eventually betrays him when "he is no longer useful". The Ohu dogs also aren't aware nor even slightly suspicious about Murder S's original identity. He is also immune to having his mind being read by Batto.
Murder S behaves slightly differently to his "Sniper" self to prevent raising any suspicions about his past: he is calmer, doesn't display much emotion nor is shown to be wrathful/being there for revenge against anybody. He
is wrathful, though, planning to have Hougen's army finishing off the Ohu dogs as revenge against them...
And he still has his power ambitions, for which he doesn't mind if Hougen's soldiers die, as he wants to get any dogs out of the way for his leadership!
Murder S is sent a few times by Hougen to attack the Ohu dogs. The Ohu dogs have some battles against Murder S, just thinking of him as another of Hougen's soldiers and not realizing who he actually is. Vague hints of Murder S's identity are usually implied but nothing is really specified.
The reveal of Murder S's identity and past comes after Weed wins the battle against Hougen. Weed doesn't really know if sparing Hougen's life or getting him to be killed, as he doesn't want to make the mistake of being overly forgiveful again. While Weed is thinking what to do, Murder S comes and kills the weakened Hougen!
This is when they learn that Murder S is Sniper and all the things that happened to him and that he did.
Sniper goes back to acting like his GNG self and he celebrates as he has completed most of his goals: He weakened many of the Ohu dogs, he used Hougen's army and he caused it to stop existing once it was no longer necessary. Then all the remaining Ohu dogs go into the true final battle against Sniper!
The battle against Sniper is a very long one even if it's
all the Ohu dogs vs just him, as his metal legs make him much stronger here, stronger than Hougen himself. A single kick from Sniper can be as lethal as an attack from Akakabuto!
As the Ohu dogs progress on the battle, Sniper becomes angrier and more thirsty of revenge, killing many of the weaker unnamed soldiers and injuring some of the powerful soldiers out of the battle. On his final phase of rage, he forgets the existence of everybody but his mortal enemy Gin and his son Weed, and he aggresively goes out of his way to attempt killing them!
The next events go the same as in the original story (though in changed order),
he ends up dying drowned, not without attempting to take Weed with him. And it's
Jerome who helps Weed escape from this last attempt of revenge by Sniper, showing his loyalty to him and the pack.