Klaue’s involvement with Ultron helped the latter expand its army, leading to the destruction of Sokovia. Later, with Erik Killmonger, he caused chaos for many, including the Avengers ...

Killmonger will be aided by Klaue, who hasn't lost his thirst for Wakanda's valuable vibranium stockpile. The trailers also make it clear that Klaue has received a few upgrades of his own ...