Undertail

You are whoever you want, events occur after the barrier is destroyed.

Frisk: the seventh soul and the last fallen human, yellowish skin, closed eyes, short brown hair, blue sweater with purple stripes, brown shorts

Chara: a man fallen in front of Frisk, short brown hair, red eyes, green sweater with a yellow stripe, brown shorts

Asriel: a goat, son of the king and former queen, green and yellow striped sweater, brown pants

Asgore: a goat, the king of the dungeon, strong, in armor, and a cloak on his shoulders

Toriel: former queen of the underworld, goat, long purple dress with long white sleeves

Sans: skeleton, loves puns, white t-shirt, blue jacket, black shorts with white stripes, and pink slippers

Papyrus: Sans's younger brother, wants to become a guard for the royal guard, wears armor on his body

Undyne is a blue-skinned, red-haired, eye-patched figure, wearing armor, captain of the royal guard, and sometimes a plain black T-shirt and blue pants.

Alphys: yellow dragon, royal alchemist, white long robe, glasses, shy, in love with Undyne

Metatone - black hair with long bangs that cover the right eye;
pale "skin" with visible metallic segments
pink chest panel with speaker and sensor handle;
a narrow metal waist with a clever box mechanism with a heart-shaped pattern
black shoulder pads over segmented gloved hands;
Long legs in black ending in pink high-heeled boots.