Aaron

Aaron is an enemy that can appear in Waterfall ; )

he is a muscular, mer-horse (or rather a sea horse ; ) ) with a long, winding tail and far too many abs

his lines are generally vaguely flirty and he adds a winking face to the end of every line he speaks ; )

he's very proud of his muscles and even attacks with huge, flexing arm shaped bullets (and sweat bullets) in battle ; )

to SPARE him, the player must FLEX at Aaron, the first time he will take it as a challenge to a flexing contest, the second time he will flex too hard and flex himself out of the room meaning the player has won by default ; )

trivia: his appearance as a muscular horse-creature that sweats a lot seems to be a reference to Equius Zahank from Homestuck