Can't find Hamilcrab on level 30 of asphalt mines. Anyone help?

Hi Guys, I'm trying to find gigantic gear for me new buddy and the wiki said there's a merchant that sells it on level 30 of asphalt mines. Well I spent a long time getting here and I can't find him anywhere? I've auto searched with a pickaxe in hand and can't find him anywhere? Is there some trick to it? Was he just a random fire crab that attacked me and I killed him (but no message popup or obvious inventory drop?)?