Ange was ordinarily just a skeleton, if flung into the wilderness, he would presumably either squat somewhere or wander around, indistinguishable from the common skeletons. Without Negris pointing out anything to him, he wouldn't probably bother to move.
However, as soon as it comes to sowing, his initiative becomes extraordinarily strong. The first thing he does is find the Big Bone to inquire about the relay station's location, then he hurries off with his team, leaving behind a bunch of bewildered refugees and Serene, who is holding the big cat.
The big cat jumps down from Serene's embrace, turns its head and roars at her, then runs in the direction of Ange. Its slightly stumbling steps reveal its weakness.
Big Bone looks back and roars, the big cat swiftly nods in response, jumps onto Big Bone's palm, and scuttles up his arm. It quickly crawls to the top of Big Bone's head, flops down, its flesh and fur hanging down, neatly covering its brain case.