Aphros

Aphros is the Music and Poetry teacher at Camp Fish-Blood, the camp that has trained countless Mer-Heroes. He is the half-brother of Chiron.

History
Aphros has trained countless Mer-Heroes, including Triton, Glaucus, Weissmuller, and Bill.

Apperance
Aphros is larger than Bythos and is a blueish color instead of green. Leo describes him as having "Arnold-as-Terminator" abs and arms, and a square, brutish head. He has a massive blue-black afro that almost covers his lobster claw horns.

The Mark of Athena
Aphros and his comrades rescue Leo Valdez, Hazel Levesque, and Frank Zhang from drowning in the ocean after they defeated the Skolopendra. He later interrogates Leo in order to figure out why they were there and whether they could trust them. He listens to Leo tell his story about their quest, and in the process of listening knits a bonnet. He later agrees to send a group of mer-heroes on a quest to save the creatures trapped by Phorcys, and gives Leo a plate of delicious brownies and the recipe.