Velma
Velma (from Wendy, the Good Little Witch) appears in 61 issues in grailworth's catalog, and was first published in 1954.
Every appearance we value
Casper Space Ship (1972) 2 issues
Casper the Friendly Ghost (1952) 1 issue
Casper's Ghostland (1959) 4 issues
Spooky (1955) 3 issues
Spooky Spooktown (1961) 2 issues
TV Casper & Co. (1963) 1 issue
Character appearances from the Grand Comics Database, CC BY-SA 4.0.