Gregory Costello

Issue appearances: 7

Gregory Costello, also known as Gregory John Costello, is a comic book character. Gregory Costello is associated with Avatar Press. Gregory Costello appears in...

First appearance: #4

Issues featuring this character:

• #4
• #5
• #6
• #7
• #8
• #9
• #4
• #6
• #5
• #6
• #4
• #8
• #8
• #9
• #4