It would be ridiculous to try and out-do what Sean K. Reynolds has already brilliantly done for D&D 3.5 in The New Argonauts so at the start of every one of these posts I’m going to 1) thank him for making that supplement (thank you Sean!) and 2) tell you to go download it (it’s free–give it 5 stars because damn). This blog series is not intended to be a reproduction of that product, only a conversion update. Go get it.

Post 1: What You Need To Play

Master Page for D&D 5E Ancient Greece/Monster List

Antaeus

Medium giant, neutral
Armor Class 14 (studded leather)
Hit Points 57 (6d8+30)
Speed 30 ft.

Saving Throws Dex +4
Skills Athletics +7, Perception +2
Senses passive Perception 12
Languages Common
Challenge 4 (1,100 XP)

Gaea’s Strength. As long as Antaeus is in contact with the earth, his Strength is increased by 4 (included in his statistics). This feature functions if he stands on earth, stone, sand, or mud; even a wooden or stone floor of a building or street is sufficient as long as that is in contact with the actual ground.
Gaea’s Vitality. If he is knocked unconscious or killed while in contact with the earth, Antaeus is immediately healed to perfect health and can take actions on his next turn. He can only be permanently killed if it is done while he is not in contact with the earth.
Power Attack. When Anteus makes his first melee weapon attack in a turn, he can choose to take a -5 penalty to his melee weapon attack rolls in exchange for a +10 bonus to melee weapon damage. In addition, Anteus can use a bonus action to make one melee weapon attack after he uses a melee weapon to reduce a creature to 0 hit points or scores a critical hit with it. Anteus can only use this feature on his turn.

ACTIONS
Slam. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 7 (1d4+5) bludgeoning damage.

The son of Poseidon and Gaea, Antaeus was a Libyan giant (though no bigger than a large man) who wrestled anyone who passed through his domain, using their skulls to build a great temple to his father. He was slain by Heracles. Antaeus doesn’t like open combat, preferring to wrestle his opponents one at a time.

Anteus challenges heroes to wrestling matches rather than chaotic battle, refusing to let anyone pass him on the road unless they agree. In a fight he grapples one opponent until his enemy is unconscious or dead.

An Intelligence (History) check reveals the following information: 8—Antaeus was a Libyan giant, son of Gaea, undefeated in wrestling. 13—He wrestled Heracles and lost. 18—Heracles won by lifting Antaeus off the ground, preventing the giant from drawing strength from his mother the Earth.