Ogralus

"Ogralus is said to appear in the dreams of lying children to scare them back to honesty. Liars cannot escape from Ogralus or their nightmares."

- Ogralus' Yo-kai Medallium Biography.

"BLUE!! You're shaking with fear! But don't worry. From now on, I'm your ally."

- Ogralus

Ogralus (Ao Oni in Japanese) is a Yo-kai in the Yo-kai Watch series. He is one of the overseers of "Terror Time", a dimension that children are taken to in their nightmares, and is a physical representation of a person's fears and worries.

He is described as a terrifying, brute of an oni who will hunt down any children that have lied and brutally attack them with his club.

Yo-kai Watch
If Nate/Katie have defeated Gargaros. Gargaros' more powerful brother: Ogralus, will appear and hunt the Player down instead.

During Terror Time the Player must avoid Ogralus, while also avoiding the other mini-oni that will alert him to their presence if they spot the player. There are various chests scattered throughout Terror Time, however it is possible to simply run straight for the exit back to the normal dimension. As of Yo-kai Watch 3, a key is first required to be collected before the player can exit Terror Time.

Instead of running towards the Player when is alerted of their location like Gargaros, Ogralus instead teleports to their location, making it even harder to avoid him.

Gargaros is possible to take down in a direct battle doing Terror Time, and doing so will result in easy access to that Terror Time's chests, however he is ridiculously tough.

If the player does manage to defeat him, his brother Orcanos will appear during Terror Time instead, and he is horrifically difficult to defeat, even with a full team of level 99, S-rank Yo-kai.

Yo-kai Watch: Wibble Wobble
The Player can befriend Ogralus during the Terror Time and Oni Crank-a-kai events.

Yo-kai Watch 2 Psychic Spectres
The Player must link Fleshy Souls with Psychic Spectres and go to Mystery Way. They will then encounter Toadal Dude next to a door. If the Player enters the door they will find themselves in Terror Time at Fox Shrine Road. Once the Player finds the Shrine they will find Ogralus, you can then battle him.

There is a chance that when you beat him he will befriend you, however since he is a boss, he does not accept food to raise the chance of him befriending you, the only thing that works is using a Yo-kai with the Popularity Skill or one holding a Superstar Soul.

Yo-kai Watch Blasters
Ogralus along with his brothers appear as bosses in the Big Boss Mode. If the Player defeats Ultra Ogralus, they will gain Ogralus' Friend Form as a playable character.

Yo-kai Watch 3
Ogralus has a chance of being freed from the Terror Time Crank-a-kai or he can be befriended in a Blasters T dungeon.

Trivia

 * The main reason of Ogralus and Orcanos' existence is to keep Players from getting too cocky or bored in Terror Time.