Finn is a character from the animated show "Adventure Time", and is the main character of the show. But when the darkness (aka the corruption or glitch) from Learning with Pibby came to Adventure Time, only a few survived, Finn being one of them. He still has his green back pack, and he's now armed with a half-glitchy sword.

Because of the events that have happened, Finn is always seen to be sad and tired, but he's a tough kid, always trying to help other survivors he can find.

Ooo's survivor of the darkness

The Queen was the ruler of the island along with the king before the Malaise struck. Now she is determined to make sure that no one leaves to ensure that the plague doesn't spread to other parts of the world
Her weapon is her rapier, which has the power to slice through reality
Her clothes are gold coloured with gold high knee boots and a black cloak
Like the Beheaded, the Queen has a homunculus for a head that has no mouth has three marks resembling the King's coat of arms for eyes and a halo

the guardian of the lighthouse from Dead Cells

An easy going and cheerful person (mostly) who likes smoking cigarettes, singing and wearing crop tops.

chill, cheerful, easy-going, sassy

Jake the Dog is a character and one of the two major protagonists in Adventure Time

Finn's best friend and half brother

The Beheaded, also known as The Prisoner or the Fallen One, is the protagonist of Dead Cells. It is a gelatinous creature with a single glowing eye (called a Homunculus) that can control headless corpses until said body becomes so damaged to the extent it becomes unusable.

He uses an array of melee weapons, shields (he can parry), and bows. His most preferred weapon is his panchaku, which is just 2 vorpans attached by a string like a nunchaku.

he kills. He dies. He comes back. He learns.

Jake the Dog (along with Finn Mertens) is a victim and a corrupted zombie of the darkness (aka the Corruption or glitch) from Learning with Pibby.

Jake has the same appearance in the show (which is an orange dog with long arms and white pupils). However, The lower half of his body is swallowed by The Darkness (which looks like a black glitchy substance).

He still has is stretchy powers, but now he's able to corrupt people like any other victim of the darkness.

"W̴h̴y̵ ̶a̵r̷e̷ ̵y̶o̴u̴ ̷s̷t̵i̴l̵l̵ ̴a̸l̵i̸v̷e̶?̶"

Finn Mertens (from Adventure Time) is a survivor of the Darkness (aka Corruption or Glitch) that originated from Learning With Pibby.

v2 survivor finn moment

Boyfriend from Friday Night Funkin', along with Pibby from Learning With Pibby, is a survivor of the darkness (aka the corruption or glitch) which is also from Learning with Pibby.

From Pibby: Apocalypse

Before the darkness, Gumball was the protagonist in The Amazing World of Gumball. Now that he's a victim of the corruption, he's become a glitchy zombie like victim who only wants to spread this "joy" (the glitch) to everyone.

During the corruption, Gumball lost his family (except for Darwin) due to them being taken far far away, never to be seen again.

"The D̵a̷r̶k̷n̸e̷s̶s̵... its calling me."

As the name serves, she's Cassette Girl's evil counterpart. While the original is cheerful and easy going, Cassette Goon is hostile; and hates Cassette Girl from the bottom of her heart. She's also homophobic.

Cassette Girl's evil counterpart

The Darkness has come for the Friday Night Funkin' universe and all of its inhabitants, everyone but a few escaping. Girlfriend, in her last moments of sanity, uses her demonic powers to put a barrier around Boyfriend and anyone around him. Unfortunately, Boyfriend couldn't save Pico, only getting to keep his gun with him as a memory of his lost friend. Shortly after that, Boyfriend encounters Pibby and decides to ally with her. They are now fighting for their lives, hoping to save the world. 

"Fight the corruption; it's life or death"

Mushroom Boi is a friendly jerkshroom from Dead Cells, where instead of charging into you, he charges into enemies. He's very clingy, friendly and cute, but can unfortunately explode if treated incorrectly.

a friendly jerkshroom with a bowtie on it's head

Before the darkness, Finn the human was a hero, the guardian of Ooo. But when the corruption arrived to Adventure Time, everyone, including himself, is now corrupted with the darkness. On the outside, Finn wants nothing but for the darkness to spread, but inside, of what part of Finn is left, he's waiting for someone, anyone, to get him out of this glitchy nightmare.

"I̶T̶S̶ ̴A̸D̴V̸E̷N̶T̵U̸R̵E̵ ̶T̸I̵M̷E̶"

Darwin Watterson (From The Amazing World Of Gumball) along with Boyfriend and Pibby, is a survivor of the darkness (aka corruption aka glitch). He's lost his brother Gumball from the glitch and has been separated from his other family members due to them being taken far far away, never to be seen again. The only thing he's armed with is the Universal Remote (a remote that can control virtually anything and anyone in the universe).