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In his 2003 incarnation Marlin is shown to be a very stubborn and tenacious hunter, who never allows himself to be diverted from his prey. He is after only "exotic", challenging prey and cares not a whit about how his victims must feel or whether they are capable of feelings at all (eg Leatherhead).
Marlin also does not seem to be very sociable; except for his robot helper which he affectionately names "Amelia" and his hunting rifle "Betsy".
In the 2003 animated series Marlin appears in the episode "Hunted". In this version he uses a helper robot named "Amelia", and his "Betsy" is a high-powered laser gun in this case. Marlin is presumably killed in the climax of this episode by the explosion from his damaged rifle; his real current status remains unknown.
- His obsession with trying to find the next big hunt, makes him similar to the Spider-Man villain Kraven the Hunter. However unlike Kraven, he has no problem using guns.
- His robot Amelia is parody of R2-D2 from the Star Wars universe.