Origins of characters whose name contains “Ultra the Multi-Alien (Ace Arn)”

IssueTitleNotes
103Mystery in Space1st appearance Ultra the Multi-Alien; 1st appearance Ultra the Multi-Alien (Ace Arn); Origin of Ultra the Multi-Alien; Origin of Ultra the Multi-Alien (Ace Arn)
104Mystery in Space2nd Appearance of Ultra the Multi-Alien; Origin of Ultra the Multi-Alien (Ace Arn)