- Parents: Zeus and Alcmene
- Uncles: Poseidon and Hades
- Immortal half-siblings: Aphrodite, Apollo, Ares, Artemis, Athena, Bacchus, Discord, Hephaestus, Hermes
- Half-mortal half-siblings: Castor, Pollux, Lucius
- Mortal half-siblings: Iphicles
- In the Young Hercules (Movie Pilot), Hercules wears a brown leather vest with a sheepskin lining, and brown leather pants. His wears brown leather gauntlets that cover most of his arm from wrist to elbow. Both the gauntlets and his thick belt are lightly studded with metal.
- In the Season 1 TV episodes, Hercules typically wears a yellow and brown leather tunic and brown leather pants. He wears brown leather gauntlets that cover most of his arm from wrist to elbow. Both the gauntlets and his thick belt are heavily studded with metal. He also wears a band around his left upper arm of brown leather studded with metal.
- Hercules appeared shirtless briefly in 1.02 - Between Friends and in 1.06 - Teacher's Pests.
- Hercules went down to an undershirt after his bunk caught fire in 1.13 - Forgery, while sleeping in 1.16 - Down and Out in Academy Hills, for the Corinthian Games in 1.17 - Winner Take All, when his nightmare kidnaps the cadets in 1.28 - In Your Dreams, Talking to Mila in the middle of the night in 1.47 - Mila.
- Hercules disguised himself in Nezzas's clothing in 1.04 - Herc and Seek.
- Superhuman strength - 1.02 - Between Friends, 1.37 - The Head That Wears The Crown.
- Can see Gods when they are invisible to mortals - 1.07 - Inn Trouble, 1.12 - Battle Lines II, 1.25 - Herc's Nemesis, 1.39 - The Skeptic, 1.47 - Mila.
- Can see actions done by Gods when the acts themselves are invisible to mortals - 1.30 - Golden Bow.
- Can bungee jump... sorta - Young Hercules (Movie Pilot), Young Hercules (Novelization).
- Has excellent aim - 1.01 - Treasure of Zeus, 1.30 - Golden Bow, 1.42 - The Prize.
- Can start a fire with his gauntlets - 1.01 - Treasure of Zeus.
- Is very talented at handling and manipulating a length of rope - 1.01 - Treasure of Zeus, 1.27 - Mommy Dearests, 1.37 - The Head That Wears The Crown.
- Can (sorta) throw his voice (although when he's impersonating Iolaus it comes out high-pitched and squeaky) - 1.06 - Teacher's Pests.
- Can ride a horse - 1.08 - Keeping Up With the Jasons.
- Can whistle - 1.10 - Cyrano de Hercules.
- Can juggle - 1.13 - Forgery.
- Gymnastics - 1.14 - No Way Out.
- Can kip-up: flip/jump to his feet from a prone position laying on his back.
- Fishing - 1.15 - Ares on Trial.
- Can sing and play the lyre - 1.32 - Cram-Ped, 1.33 - Con Ares, 1.42 - The Prize.
- Yvenna - (see Hercules and Yvenna).
- Kora - (see Hercules and Kora).
- Lilith - (see Hercules and Lilith).
- Cyane - (see Hercules and Cyane).
- Eurydice - (see Hercules and Eurydice).
- Tyra - (1.10 - Cyrano de Hercules).
- Galatea - (1.10 - Cyrano de Hercules).
- Nemesis - (1.25 - Herc's Nemesis).
- Young Woman Chantelle - (1.26 - Cold Feet).
- Cleo - (1.29 - Sisters).
- Mila - (1.47 - Mila).
- Hates mushrooms - 1.14 - No Way Out
- See Hercules and Iolaus for a breakdown of their friendship
- See Jason and Hercules for a breakdown of their friendship