I loved WKUK and still watch it on youtube all the time. (FWIW Trevor died a few years back. Got drunk and fell of a balcony, IIRC).
As for KITH, I haven’t watched the new one, but the other day I put on a couple of sketches and was surprised that my daughter said “That’s Glenn from Superstore”.
If you didn’t grow up watching KITH, I’m surprised you’d be able to notice that this 60 year old guy with a weird voice is the same as that 30 year old guy dressed up like a chicken.
Oh, and Dave Foley has a cameo as Glenn’s father (and not really related, but Kerri Kenney plays his wife).
If you’ve never seen Superstore, here’s his character from that.