Mark Mandrill (Matter Master)
Mark Mandrill (Matter Master) appears in 8 issues in grailworth's catalog, and was first published in 1961. First appearance: Brave and the Bold #35 (1955), cover dated 1961.
First appearance
Origin
Every appearance we value
Brave and the Bold (1955) 2 issues
DC Comics Presents (1978) 1 issue
Hawkman (1964) 1 issue
World's Finest Comics (1941) 2 issues
Character appearances from the Grand Comics Database, CC BY-SA 4.0.