Zoey

Marie

Ignacio

Galen

Ollie

Tala

Quinn

Bodie

Teacher

British

Vampire Bodyguard

Francis

Woman

Bodyguard

The Narrator

African lady

Soft Bubbly

Southern

Robot

Hailey

French

Hood

Indian Girl Accent

A French Girl

Male Russian Accent

Irish

"If you get hurt, you must hurt others as well. Calamity surpasses everything."
— Nightmare!Sans threatening Cross and Dream!Sans
Nightmare!Sans is the secondary antagonist of Underverse Season 1, and a master for Cross and X-Event!Chara. After Cross ends up having negative feelings, Nightmare enters his lonely universe, and they both create a deal that will allow them to extract parts of other worlds to his. He doesn't start causing problems until during Underverse 0.3.

Underse Nightmare

Underverse Nightmare