He is a descendant of Yosemite Sam. He acts like Yosemite Sam. He is alot like Yosemite Sam. He also talks like Yosemite Sam and says some things he would say. He attacked a space train carrying the treasures of Freleng. Sometimes, he can't remember what he's saying and has even forgotten his own name. He secretly worked with Zadavia's former General, Deuce to steal Ace's Guardian Strike Sword. He ended up captured, but then released (under the pretense of a brilliant escape) in order to serve as bait for his boss. Much like his ancestor Yosemite Sam, Ophiuchus likes to shoot now and ask questions later. He is very hostile with all of his approches. Sam is not the brightest either.
Having to be subtlety helped by the Loonatics to escape (all part of their plan to follow Sam to Deuce).
Sam worked with General Deuce in order to catch the interdimentional train so he could rob it of it's riches. Once he was captured and released by the Loonatics he went back to Deuce who knew he was only released so they could find him. Once Deuce finally thinks he has the train, Sam follows. Deuce, not wanting to share the universe with Sam then kicks him off the train.