“Official” artwork shows Berg with a bun iirc. His bare chest has a large X scar across it, though he normally wears armor (half plate) if and when he can (he’s lost his armor a few times to monsters and suff). He currently has a shield. His hammer is like the crystal hammer from that WoW Dranei paladin artwork, but it can be one-handed. One arm is stone with veins of lava underneath I think. The other arm has sort of a shriveled band around part of the forearm where the bracer used to be. This fan art is pretty on point: https://imgur.com/uiREePq
Sali is a little bit tortoise, a little bit sea turtle - he’s a water variant of Tortle, with webbed/fin feet and all that, has trouble walking around in the desert. Doesn’t wear any clothes except for a big cloak that he’ll wrap around him when he doesn’t want to be noticed (makes him look like a hunchback). I think he has a pack, as well as a bag for spell components (no magical focus).