Alien Seer

The Alien Seer is an unnamed extraterrestrial seer who is responsible for giving Boros the prophecy about the worthy opponent he is desperate to face in the universe on planet Earth in order to satisfy in thirst for a worthy and challenging battle.

Appearance
The seer is an alien with 8 eyes and multiple tentacles on its face.

Alien Conquerors Arc
Boros mentions the seer's prophecy to Saitama about the worthy opponent on Earth while they are fighting. However, the seer never reveals the identity of the worthy opponent to Boros.

Supernatural Abilities
Clairvoyance: The seer was shown to have this ability, as it deducted the prophecy about the worthy opponent to Boros. However, it's never states the true identity of the opponent.