Adam

Adam (who goes by the chumhandle "adamSkelecoot") is a human skeleton and frequent visitor to the WTMANC memo. He presents himself as level-headed and eloquent in speech, but has shown signs of eccentricity from time to time. His humour and outlook, in comparison to the others, is more morbid (which is understandable for a skeleton). His interactions with others in the memo range from sardonic, sarcastic and occasionally mocking, the latter usually in relation to the more... interesting visitors to the memo.

A rough history of his RP adventures
Some time after reading through Homestuck for the first time, he stumbled across a fan version of Pesterchum, either from simply learning of it from someone on Discord or out of wondering whether it existed or not. For a time, he was unsure on certain features of Pesterchum, namely the memos, most of which were empty, all of which had no descriptions. This made him worry, as him joining any of these memos meant he was jumping in blind into a chatroom that may not be hospitable to the undead.

Eventually, however, he came across the #WTMANC memo, and found that a) it was the most popular memo and b) it was also the most active. He would meet many strange individuals in this memo, some troll, some human, some of a different nature, but all of which were mentally younger than him (although this isn't much of a feat, considering that his mental age is about 2-3 times his actual age). He soon developed a reputation of sorts, as a sensible, logical and particularly sarcastic denizen of the memo, eventually developing his signature greeting - "Gallow", a somewhat morbid pun on "Hello" which summarises his dark sense of humour.

Then came 2020, when the memo was visited by canon characters, an event which drew some considerable interest from Adam. He decided to join them in their subsequent adventures, from a mall trip which ended in a slaughter by Vriska's hand, a camping trip where abnormal events started to occur (including a Karkat-like ape known as Karkape), and so forth. It was even thought that he had joined them to a trip to Mars on a spaceship, but he quickly debunked this statement, and when he heard of a massacre that occurred on the ship, he was shocked, but also rather relieved to not have been there.

Since the adventures have started to grind to a halt, he has spend most of his time on the memo, conversing with the other inhabitants in his typical sardonic way. He has become a frequent visitor to the memo, with it becoming his secondary source of interaction next to Discord.