welt (sometimes stylized "welt" without the zero-width space, formerly "webb") is an autistic Canadian programmer, and owner of the spider den. He is an active member of the cult. He has had some involvement with Denshi's projects, including donating the denshi.live domain in early 2021, and voicing a part of the Rosalina's Storybook reading.
He can be easily identified by his use of white-on-black styling, spider obsession, and furry hatred. You'll often see him with Webber (a character from the Don't Starve series) as his profile picture, as well as in his posts.
You can find his personal website, with contact information here.