Question: What heroic qualities are anti-hero, Seth Gecko, lacking?
Sentence (from "Seth Gecko"): The original Seth is the protagonist of the original film, described as a cool, suave, short-fused, sociopathic anti-hero, in the "From Dusk till Dawn" universe consisting of the 1996 film and its 2001 spin-off video game of the same name.
Relevant evidence: Yes