Firbolg

Firbolgs are a race of giant-kin -- that is, giants who aren't big enough to be "proper" giants, but still bigger than humans -- introduced in the Monster Manual 2 for the very first edition of Dungeons & Dragons, and have managed to sneak into every edition since.   In general, they're described as neutral-with-good leanings, being a reclusive and fairly reasonable race of giants. They look very human, essentially appearing as 10ft tall Irish Celts, probably because their name is taken from a race of mythical, magical giants in Irish Celtic folklore. Perhaps because of this, 4th edition tweaked them into a race of fae giants who worship a Maiden/Mother/Crone trinity (Sehanine, Melora and The Raven Queen respectively) and who engage in the Wild Hunt. 5e kind of watered them down pretty badly, earning many complaints that they now resembled the Voadkyn more than they did their original selves.   They have the distinct honor of being one of the few giant-kin races that have actually been traditionally playable, if always hindered by the rules -- for example, the 3.5 Firbolg had a Level Adjustment of +18, showcasing just how ridiculous that mechanic could get. Playable versions of the Firbolg appeared in the Book of Monstrous Humanoids (AD&D), the Monster Manual 2 (3.5) and Volo's Guide to Monsters (5e).   They should not be confused with the Furbolgs from World of Warcraft, who are large, nature-loving bear-people.