To my eye, his style looks like comics + mural art + watercolor = a really fresh and interesting blend that's different from anything else out there. If you'd like to keep track of his daily doings, he has great Instagram and Tumblr accounts where he posts his art frequently. In the meantime, here are some of his pieces:
Mr. Gariba is also an animator. Until recently, he worked on the Adult Swim show, Black Dynamite, and now he's apparently developing a slightly mysterious animation project called Anansi. I haven't been able to find much information about it, but here are some character shots from his website:
I'm intrigued! But here's the thing -- as far as I can tell, Mr. Gariba has never illustrated children's books. I would love to see his style in the pages of a picture book, so, if he's interested in that kind of work, we might see some of that in the future. Here's hoping!