As a whole they are named Cerberus, however each head also has their own individual names, and different personalities.

Maera, with the droopy horns, is sweet, loving, and mellow. He loves to give nuzzles, whether the receiver of those nuzzles are August, Frost or Pixie, his fellow heads, or even strangers. He'll show his affection easily. Though this also means he's a bit sensitive, so if you're mean to him he'll sulk.

Argos is the most balanced of the three. He's confident and friendly, and eager to meet new people. He tends to be wary of scary-looking people though, and will approach with caution, unlike the last head of the bunch.

Laelaps, with the straight horns, is energetic and adventurous, if maybe a bit headstrong. He is the first to want to dive into something new, whether the other two do or not. He has a bad habit of ramming his head into things that seem threatening, or even if he's just bored, without really thinking of the possible outcome. This is how his horn got broken. He was bored on an outing so he rammed his horns into the nearest object, which happened to be stone. The stone won, obviously.