Abaddon

Abaddon the Lord of Avernus is a melee strength Hero known as one of the most versatile characters in Dota. He is most often played as a support due to powerful utility abilities such as Mist Coil, a powerful single target nuke/heal, and Aphotic Shield which absorbs a threshold of damage. Abaddon can also be an effective semi-carry or tank due to his passive Curse of Avernus which both slows his target and speeds up his allies and himself, and his unique ultimate, Borrowed Time.

Trivia

 * In the Bible, Abaddon is the name of an angel, who will rise from the Abyss and command an army of locusts. His name means "the Destroyer" in Hebrew.
 * Abaddon's title, Lord of Avernus, is a reference to the famous crater in Italy, which was, in ancient times, believed to be the entrance to the underworld.
 * Abaddon is speculated to be the "vaporous figure sheathed in spirit forged armor" featured in Legion Commander's lore.
 * In DotA, Abaddon's third skill was originally called "Frostmourne." It had to be changed in transition to Dota 2 due to copyright reasons, since Frostmourne exists as a famed weapon in the Warcraft universe.