A Friend-chman of Blue, Official messenger of Friend Club. Harasses Science!Sans about the side effects of the spiked eggnog. Wears glasses that either say "HOHO", "BRAH" or "RUDE" (When Underswap Papyrus ignores him). Wears a mostly green sweater that says "Ho Yo Lo Bro." He has a lax attitude and tends to be a very 'go with the flow' type personality. he very much likes to be a 'totes rad broseph' but is blunt to a fault (due again to his total lack of caring, and therefore empathy)

90's Nightmare [CPAU]

Hobo is not a god who doesn't care, but instead a god who tries desperately hard to not care. He does this as to not see his reality and struggle with losing everything and starting over again as the world resets.Hobo seems withdrawn from relationships at times, but this is usually just due to his mindset of trying hard to not think about the harm, death or eventual reset to the ones he cares about as to not struggle with the emotions that come with them. He has to cope with loneliness

Laid-back, God, Olivers bud

The Marionette doesn't physcially appear, but appears in the Happiest Day arcade games, as the 8-Bit Puppet, who tells Jack what to do in order to help the dead kids get their happiest day. the Puppet's name is Dee. It is also revealed that Jack Kennedy is her older brother and that they are both orphans. She also states she has another brother name Peter who is Phone Guy

kind, caring, understanding, listener

Acts like a jerk to his brother. (Acts good to his brother after the Underfell therapy with US Papyrus) At start has a red and black jumper which reads 'Bad to the Bone' and later after his chat with his bro, has on a brown and black one reading 'Merry Christmas Ya Filthy Animal'. Also cursed at Blue, in which US Papyrus came up to him about warning him again about not cursing in front of his bro.

mean, tries to be polite [CPAU]

Fell Sans, much like every other monster in Underfell, is a darker and edgier version of the original Sans. Sans can be harsh at times. He is not into puns that much, but he likes knock knock jokes. He often gets tired, but rarely flustered. He has an allergy to cats. He strives to be cool and collected.

mean, sarcastic, kind on the inside

Member of the Friend Club. Often appears with Science Sans. Almost always keeps his red eye on (something that Science!sans is curious about)
Wears a brown sweater that says "Scary Christmas." and has a skull on it, Swears A LOT. Mean and hides his personalitty but really is just traumatized. Rarely will be nice. Calm most of the time. currently in a christmas party with diffrent alternate versions of him and his brother (Sans'es and papyrus'es). People call him fell 

 mean but calm [CPAU]

He kills everything he touches, Reaping sinful souls had been what he'd done for the past centuries, and he didn't enjoy it, but he could manage it. Unfortunately, after he had accidentally killed the person he loved, he went crazy and suicidal, with bits of his soul lost. Toriel helped him, getting back his sanity. Can be uncontrollable and temporarily crazy.Sans doesn't like his job, but tries his best to hide it. He is calm most of the time and hides his feelings. scared of dolls and clowns. 