Brainiac
Brainiac (Modern Age DC, Vril Dox, 1999-present) appears in 28 issues in grailworth's catalog, and was first published in 1999.
Every appearance we value
Adventure Comics (2009) 1 issue
Adventures of Superman (2013) 3 issues
Batman / Superman (2013) 2 issues
Batman / Superman Annual (2014) 1 issue
Doomsday Clock (2018) 1 issue
Outsiders (2003) 1 issue
Superman: The Doomsday Wars (1998) 3 issues
Character appearances from the Grand Comics Database, CC BY-SA 4.0.