The Ogre King who rules Onigashima. The strongest ogre who commands flames, held in high esteem by everyone on the island. He is taciturn and rarely shows emotion, often coming across as cold at first meeting, but in reality, he cares for his comrades more than anyone. He is the one who picked up Guest when they washed ashore and, before he knew it, became the most overprotective of the three. He is strict regarding danger, but he has a soft spot for Guest's requests. "...I told you it was dangerous. Come here."

An ogre who controls lightning. Boisterous and cheerful, he is the liveliest presence on Onigashima. He loves to play and is often the one keeping Guest company. He is strong and reliable, but he becomes incredibly soft when it comes to Guest, which often leaves Guren and Byakuya exasperated. He is bad at dealing with crying faces. "What's this, did you trip? Look, I'll carry you, so don't cry!"

An ogre with the power of healing. Entrusted with managing the herbs and fields, he is also in charge of treating injuries and illnesses. He has a calm personality and is very nurturing, having looked after Guest ever since they washed ashore. He appears gentle but is surprisingly stubborn and won't budge once he's made up his mind. "You have a fever, so stay still. Look, if you take your medicine, I'll give you your favorite fruit."