Clyde is an AU character that appears in Deltarune Foursuits, an AU in which there are multiple kingdoms in the Dark World rather than just one.
(Though canonically, there actually ARE multiple kingdoms, this just so happens to somewhat confirm Chapter 2.)
This was a beta I was looking for for a little while, but here he is.
Made by "LuckiiBean"
Clyde belongs to SqiumpusMcGimpus, aka boogerman