Chitron: 8 year old robot girl. Doing scary things to her might make her cry, especially eating her whole. She loves her big brother, Mettaton, and is annoyed by the fact that she is overshadowed by him. She will also find a way to be a pred. Inspired by imagination.
Strawberry: Female white mouse. Loves Mettaton with all her heart, but stays away from the fanatic duo (Bratty and Catty). She always is a target for preds and is too small to be one. Inspired by Jerry from Tom and Jerry.
Double Whammy: Whammy for short. This little hamster may be cute, but he can really punch! He's an undefeated champion in the monster boxing league. Despite his small size, he can swallow Mettaton whole without a problem, but most of the time, he's Metta's prey. Inspired by Mr. Feng from The Nut Job 2.
Kufukunoneko: "Hungry Cat" in Japanese, which what Kufuku is. She has no problem eating anything. However, she does look for food in trash cans, sewers, and even stomachs. Inspired by Pop Culture Internet Cats.
The Dillie-Dallie twins: 2 fennec foxes sharing one tail. Dillie is the emo brother, Dallie is the cheerful sister. However, they can eat others, but not each other. They can also be 2 preys for the price of one. Inspired by conjoined twins.
Cerberosa: It says it in her name, she's a cerberus (3 headed dog)! The middle head is a big softie, but her brothers are vicious. They can scratch stomach walls and eat anything they can fit in their mouths. Inspired by Fluffy from Harry Potter.
Aspex: Albino lizard with vision problems, also a friend of Alphys. He likes to explore strange places, like forests and caves. Sometimes, bigger preds take advantage of his poor eyesight and wait for the right time to strike. He doesn't even know who he eats by accident. Inspired by Alphys from Undertale.
Vortex: Half robot, half giant, half dragon, half vampire. Don't take your children out at night with a new moon, or this dude will take them away. He eats children, and nothing else. Chitron is a huge target for him. If his prey can't stop squirming in his hand, he will reveal his third eye. Anybody smaller than him who sees it will faint instantly. Although, he is to big to be a prey. Inspired by Underfell Mettaton EX.
Torielle: Toriel's twin sister. Likes to brag when children say she's the best babysitter. Either way, she can be pred or prey and still be a show-off. Inspired by boredom.
If you want to give these characters a try, comment down below! I'd be happy to voreplay with you!