Midlife Dices is Joel Kleine. Or is Joel Kleine Midlife Dices? It's hard to tell.
Midlife Dices usually works in the realm of D&D 5E, creating best selling DMsGuild publications such as The Raconteur's Lexicon.
He also illustrates and dabbles in design with 'domesticat' - a solo journaling rpg where you are a house cat.