Skipper Brannigan (first appeared in The Dark Tower IV: Wizard and Glass)

Skipper is mentioned as being one of Henry Dean's friends.

Skipper Brannigan is mentioned in the following books:

Everything's Eventual (Mar 2002)

Skipper is the main antagonist against Dinky in the titular story.

I’ve got a good job now, and no reason to feel glum. No more hanging out with the gumbyheads at the Supr Savr, policing up the Kart Korral and getting bothered by assholes like Skipper. Skipper’s munching the old dirt sandwich these days, but one thing I have learned in my nineteen years on this Planet Earth is don’t relax, there are Skippers everywhere.
- Everything's Eventual