Conversation so far:
What comics did Sandman appear in during the Silver Age?
Reintroduced in the Silver Age in Justice League of America #46 (July 1966), the Sandman made occasional appearances in the annual teamups between that superhero group and the JSA.
What other comics was the Sandman (Wesley Dodds) in besides Justice League of America #46?
Sandman Mystery Theatre: Sleep of Reason
Who wrote the Sandman Mystery Theatre: Sleep of Reason comics?
Matt Wagner and Steven T. Seagle
What powers or special skills did Sandman have?
Dodds has prophetic dreams which come to him as cryptic, ambiguous visions of crimes.
Does Sandman appear in any movies?
A Crime Syndicate of America version Sandman briefly appeared in Justice League: Crisis on Two Earths.
Did Sandman appear in any tv shows?
He has a non-speaking appearance in Batman: The Brave and the Bold episode Crisis: 22,300 Miles Above Earth.“

Question: Did he belong to any groups or teams?
Self-contained rewrite: Did Sandman belong to any groups or teams?