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Aphros: "We have trained all the famous mer-heroes! Name a mer-hero, and we have trained him or her!"
Leo: "Oh, sure. Like…um, the Little Mermaid?"
Aphros: "Who? No! Like Triton, Glaucus, Weissmuller, and Bill!

"Oh." Leo had no idea who any of those people were. "You trained Bill? Impressive."

Aphros and Leo, talking about Bill

Bill is a well-renowned hero of Camp Fish-Blood and a merperson.

History

Bill was trained in combat by Bythos and in music and poetry by Aphros. He is considered by Aphros to be one of the greatest Mer-Heroes that he has ever trained.

The Heroes of Olympus

The Mark of Athena

Bill is mentioned by Aphros and Bythos as one of the many mer-heroes trained at Camp Fish-Blood, despite Leo Valdez not knowing any of them. However, Leo fakes a surprised expression when he hears about Bill. After Aphros and Bythos are done questioning Leo, Hazel Levesque, and Frank Zhang, they agree to send a group of mer-people off to Atlanta on a quest to rescue all the imprisoned sea creatures there, with Bythos suggesting Bill go on the quest and Aphros agreeing. It is later said that the creatures being held by Phorcys at the Georgia Aquarium were freed.

Abilities

  • He possesses the standard abilities of a merman.
  • Aphros trained Bill himself in music, poetry, life skills, and homemaking.
  • Bythos suggested Bill for the quest in Atlanta, meaning he may also be skilled in combat.
The Heroes of Olympus
Core Series: The Lost Hero | The Son of Neptune | The Mark of Athena | The House of Hades | The Blood of Olympus
Main Characters: Jason Grace | Piper McLean | Leo Valdez | Percy Jackson | Frank Zhang | Hazel Levesque | Annabeth Chase | Reyna Avila Ramírez-Arellano | Nico di Angelo | Gleeson Hedge
Minor Characters: Rachel Elizabeth Dare | Thalia Grace | Octavian | Fleecy | Dakota | Ella | Tyson | Mrs. O'Leary | Arion | Hylla | Echo | Bob | Calypso
Olympian Gods: Zeus | Hera | Poseidon | Hades | Ares | Demeter | Athena | Apollo | Artemis | Hephaestus | Aphrodite | Hermes | Dionysus
Minor Gods: Achelous | Aeolus | Asclepius | Boreas | Keto | Khione | Thanatos | Iris | Hypnos | Hecate | Nemesis | Mithras | Notus | Triptolemus | Zephyros | Serapis | Kymopoleia | Nike | Phorcys
Roman Gods: Jupiter | Juno | Neptune | Pluto | Mars | Minerva | Ceres | Lupa | Bellona | Fortuna | Janus | Terminus | Vulcan | Mercury | Pomona | Aquilon | Hercules | Cupid | Auster | Favonius | Letus | Victoria | Orcus
Giants: Enceladus | Porphyrion | Polybotes | Alcyoneus | Ephialtes | Otis | Damasen | Clytius | Mimas | Orion | Hippolytus | Thoon | Periboia
Undead: Echo | Gray | Lityerses | Medea | Midas | Narcissus | Otrera | Phineas | Sciron
Primordial Gods: Gaea | Tartarus | Ourae | Nyx | Chaos | Ouranos | Akhlys | Erebos | Hemera | Elpis | Spes
Companion Books: Percy Jackson and the Olympians | Demigods and Monsters | The Ultimate Guide | The Demigod Files | The Demigod Diaries | The Son of Sobek | The Singer of Apollo | The Staff of Serapis | Percy Jackson's Greek Gods | Percy Jackson's Greek Heroes | The Crown of Ptolemy | Demigods & Magicians