Titus encountered his first deadly problem, and it was not human pursuit but an internal rebellion.
Actually, calling it a rebellion isn't quite accurate. In Green Skin culture, there isn't much concept of "betrayal."
They have always abided by the notion that the strong rule over the weak, and the weak must step down.
Titus was no different.
For the Iron-Tooth Clan, he was certainly a heaven-sent warrior. With a gun, a hand cannon, and a battle axe, he killed his original leader, then the warlord who ruled over them, and took over as leader. He then unified his own planet, later boarded a starship, and unified the entire Iron-Tooth Clan.
He was also one of the few rationalists among the Green Skins. After unification, he managed to suppress unrest and farmed quietly in his old lair for several years, making the brutal infighting somewhat milder, amassing elite trusted aides — those heavily armored, can-to-can fighting chiefs' guards.