And instead of making a Legendary version of him (who could have used it), they made one of Trigger Happy, who already HAD "legal maximum" starting stats for Speed, Armor AND Critical Hit. Legendary Trigger Happy starts with an Armor rating that's better than a Gill Grunt who's done all ten Heroic Armor Challenges!
Sigh. Where's the love?

[EDIT: Changed the title because I think people were taking the "why do the creators hate Gill Grunt so much" topic a little too seriously, when I really just wanted to ask "he has no perks to rate being the only one with such a bad armor class, so why was he given such a limitation?"]