Physical description
He is a Big guy, very big, tall, and strong, with long white hair that also covers his face as a beard and his upper body. 
With body paints all over the body and purple skin. 
He don't sound dumb, or Naive, so not like the Majin from Majin Forsaken Kingdom, or funny like Shrek. 
a bit like Hagrid from Harry Potter but less smooth and nice. 

-- Strengths: Natural curiosity, independent, self-sufficient, keen to learn, thoughtful.
 Weakness/flaws: Feels disconnected from his people, and lacks the instinct and faith in Maya that the Gaams have.

All Gaams accept with mystical joy the arrival of Maya's collapse. Except Majam. Majam has no mystical feelings. Majam wants to save the planet and, of course, themselves and all Gaams.
Majam knows that before the naams, the antaris inhabited Ava. They fought a withering similar to the one that has infected Maya today. They failed, but in their attempt, they developed powerful technology. Maj relies on that technology: if they find it, and if they learn as much as they can about it, they may have the clue to stop the withering.

Try to have something like 
Braum League of Legends  or Winston from overwatch