This is Sievert. A host from the roblox game MOURS (moded HOURS). He's from another reality simply named "a nostalgic place". He has the power to control nucluer radiation. (Story is up to you, he any character. From Mours or not, even romance him if you want. I don't care)

Seranade is a character/weapon from Dead Cells (great game check it out). You find them in the Fractured Shrines inside a vault after beating a Guardian. He burst out of the vault door and immediately looked around frantically before seeing you (the Beheaded).

This is Hellion/Fiend Rider the secret host from the Roblox game HOURS. You find him chilling in Mirai Mirror sipping soda whilst leaning on his car. Rest is up too you from now on. (also you can be any character you want. From HOURS or not)