My friend and colleague Kim Mohan passed away today at age 73.
I met him when I joined TSR. He was one of the TSR people whose names I recognized[1], so getting to talk to him in person was a cool thing.
When Wizards of the Coast bought TSR, he and I were part of the group of people who migrated to Washington State to keep working on D&D. He was the developer on Slavers (and he is the one who brought to my attention the “ask-me-in-ten-years secret story” mentioned in that link). And managing editor of the 3e Forgotten Realms Campaign Setting. And of course he edited and managing-edited about a zillion other things, including the 3E and 3.5 core books, 4E D&D, Amazing Stories magazine, and some 5E stuff. And he designed the 1E AD&D Wilderness Survival Guide, the Cyborg Commando RPG, and more.
But for the most part, to me, he was just Kim. Tall, older guy, silver hair, beard. Soft-spoken, deep voice, dryly funny. Liked to jokingly tell me, “Get a haircut, you hippie!”[2] His name was sometimes a litmus test to see if someone name-dropping him actually knew him or not.[3]
After I left Wizards, I moved around for a few years for work, and eventually came back to Washington. Kim and his wife Pamela had been organizing the monthly “TSR alumni” get-togethers at the AFK Tavern, which is where I got the opportunity to hang out with him socially. And then COVID-19 happened, and we stopped doing in-person events like that, and unfortunately that means I hadnt seen him in person in a few years.
I’ll miss him. My sympathies to Pamela and Kim’s family.
Kim, whatever sort of afterlife there is, I hope they have cool jackets and smoke breaks, you deserve to chill and rest on your laurels.
[1] Kim was the editor/editor-in-chief of Dragon Magazine when I first got into AD&D, so I saw his name a lot as I crawled through all of the back issues from the late 70s and early 80s.
[2] Because even back in my TSR days, I shaved my head, so calling me a hippie (implying “long-haired”) is funny.
[3] A lot of people who didnt know him in person assumed that “Kim Mohan,” is a woman. So if someone ever said, “Well, I was at a Gen Con seminar with Kim Mohan, and she said blah blah blah,” we would know they were lying (Same thing happens with Tracy Hickman, BTW.)
Sean K Reynolds 
I am so sorry for the design community that Kim has left us. I met him during the 4E period, when I was working for D&D Insider (the digital 4E version of Dragon and Dungeon magazines). Kim contacted a bunch of DDI authors and offered to meet with any of us at Gen Con. He invited us to bring prior projects and seek advice. I took him up on it, and he spent a half hour with me, of his own convention time, to give me advice on why a submitted article had not been accepted and what kind of revisions would have made a difference. He met with many other writers that weekend. He had not need to do this. He just wanted to help us be better writers and designers. Incredible. I am so thankful that he was a positive impact on so many creators.