Olga the Red Ghost, Honky the Blue Ghost.

1. Oga, the Red Ghost

There is more than one powerful gourmet cell demon in Aru. The red demon is OGRE, a lonely warrior who was once called NO.1 in the past universe. Although he has a gentle temperament, he is invincible when he is angry, and his sense of smell is very sensitive.

After Aru eats GOD and CENTER, Oga's strength has completely recovered. At this time, he can achieve complete resurrection by eating Aru again.

However, Oga felt affection for Aru because he accompanied him all the way, so he voluntarily chose to give up, and deliberately let Aru eat himself to stimulate his awakening, saying that he would become a part of Aru and embark on a gourmet journey with him in the future.

2. Blue Ghost

In the battle with King Ma, Aru awakens the power of the blue devil, and his temperament is more flamboyant than that of Oga. Aru's blue hair is due to the fact that there is a blue devil in his body (Aru originally had black hair, but later it turned into blue hair, and every time the blue devil leaves the body, Aru will turn back to black hair).

The food favored by the blue demon is different from that of the red demon Oga. The ingredients in the "red universe" can't satisfy his appetite, so he has been waiting for NEO to swallow a large number of ingredients stored in his body from the "blue universe" and regenerate.

3. Honky

A white demon with wings hidden in Alu's body, and the three scars on his face when he was born are the characteristics of the white demon.

He woke up when eating the ghost shell sealed by a golden can, and appeared for a moment when Aru and Akasia were fighting for GOD's broken neck, which scared Akasia to fly Aru away. At the end of Armageddon, he took NEO's last punch and poked NEO's head with one finger.

Known as a "tough guy" by OGRE, the Blue Ghost called him a terrible energy and bluntly said that Honky was better off lying down. Call Aru "Mr. Aru" and like to hear the phrase "Thank you for your hospitality" after each meal.