Chris KL-99 (DC, 21st century space hero)
Chris KL-99 (DC, 21st century space hero) appears in 3 issues in grailworth's catalog, and was first published in 1950.
Origin
Every appearance we value
The Brave and the Bold (2007) 1 issue
Crisis on Infinite Earths (1985) 1 issue
Secret Origins (1986) 1 issue
Character appearances from the Grand Comics Database, CC BY-SA 4.0.