In Mugman Plays Cuphead Hardmode, Cuphead stated everyone's surprise at Mugman being the first one to propose to his fiance, Calamaria.

During the Resident Evil Village series, Slenderman fell madly in love with antagonist Lady Dimitrisu, but quickly snapped out of it upon discovering what happened to protagonist Ethan Winters' daughter Rosemary, admitting later on Twitter that Sen (his own daughter) was on his mind, causing him to hide his tears from Kyzer.

'Whatup! It's your boy Stretch.' (Stretch's intro).

'Alright lads and lasses, my name is Aarkadian.' (Aarkadian's intro).

'Hello there, my name Twoton.' (Twoton's intro).

'Hey guys, Ghost here.' (Ghost AKA The Knight's intro).

'Greetings fellow human denizens! I am your Eldridge abomination known as Slenderman.' (Slenderman's intro).

'Hello everyone and welcome to Blueberry Jams!!!' (Blueberry Sans's intro).

'Hello everyone! The Great Papyrus here!!!' (Papyrus's intro).

'Howdy fellas! Mugman here!' (Mugman's intro).

I'm Kyzer Aqueron, the host of The Voices.' (Kyzer's intro)

'Hey everyone, and welcome to Kyzer And The Voices.

Blueberry Sans and Stretch from Underswap.

Luigi from Luigi's Mansion 3 (Hasn't been on the channel since his one Let's Play with Mugman.).

The Knight (known as Ghost on the channel) from Hollow Knight.

Slenderman from Slender: The Eight Pages and Slender: The Arrival.

Kyzer mostly does Let's Plays on his channel, though he normally plays the games as varied video game characters, characters from Underswap, and some OC's of Paula. Kyzer is a cup-headed young man with a small mustache and a smal poofy beard. It was confirmed in a Q&A that not only is Kyzer in college, but that his head is filled with chocolate ice cream.

Slenderman the arrival jacksepticeye