High Noon Trigger Happy's name refers to a cliche in western stories where gun duels were fought around midday, when the sun was at its highest.
Its timing and the fact Battlecast has developers related to another Blizzard title, Hearthstone: Heroes of Warcraft, might also be a reference to the Overwatch character McCree, whose ultimate attack is preceeded by the catchphrase "it's high noon".
On the card, High Noon Trigger Happy has gloves and four fingers. Ingame, he has no gloves and only three fingers.
He's the only cereal exclusive Skylander whose evilized counterpart has a purple hue. The rest of the evilized cereal Skylanders (Sonic Boom, Prism Break and Obsidian Hot Head) are exactly the same as their regular counterparts.