His hair styles change often. Aphrodite usually styles his hair for him or other servants of Zeus. Although, most of the time he is found with well kept locs and gold hair cuffs. That's just his signature look
He's trans! Although not many things about him are different besides facial structure and some stubbles of facial hair at his jaw and chin. Again, Aphrodite helped him with this.
He has no concept of time anymore. Kallopais, as far as he's aware, has been up in Olympus for years. But Zeus hasn't told him how long.
Kallopais is often referred as "Zeus' mortal/servant." But as of lately, it's suspected that he might be a secret lover of Zeus, which makes him have a rocky relationship with Hera.
Kallopais has anger issues. It is the first thing Zeus and the other gods found out when he first arrived at Olympus, furious that he was kept up there just because of what happened to him. He's angered quite often, but overall his attitude is described as "a sunshine that can spread flames if provoked." He's usually very sweet but also blunt.
He doesn't get along with Ganymede. Though their relationship could vary throughout different AUs, they'll never get along enough to be friends.
He has a tooth gap! But he's insecure about it, especially when his brother often described him having "bunny teeth".
He has a faintly glowing lightning strike scar across his eye and across his lip, something that he accidentally got when Zeus came to save him from his brother.
