The horseless headless horsemann
Team fortress 2

After living a long life of sitting pretty spin his millions of dollars, Zepheniah Mann and his brother Silas Mann had eventually come to the point of death. Zepheniah, moved onto a better place. But Silas? He wasn't done with this world. He was reincarnated into the pumpkin headed axe wielding boss battle we know today.

In game, he's basically just a large over healed demoknight. But in lore? He is so much more. He has 3000 health but can regain 200 for every soul he sends to the afterlife. Attacks that leech from him will give you nothing and can can even block status effects. He also has the ability to tell "boo!" Causing everyone in a surrounding area to become paralyzed out of fear. His head taker can pack a punch, alongside heavy knock back. He is also capable of returning from the after life through the control points around maps.

And as extra, he can pull his body apart.

He does lack any ranged abilities and doesn't have a strategy other then: kill. So it can be easy to outsmart him.

Zardy
Zardy's Maze

YOOOO ITS THE GUY FROM FRIDAY NIGHT FUNKIN FNFFFF!!!!!!!111!!1!1!!

Jokes aside, Zardy is a character from the game "Zardy's Maze." His origin is currently unknown although it believed to be either demonic, angelic or extraterrestrial.

On his own, Zardy wouldn't be considered to be that capable. He slowly walks towards the player yet can be easily scared off by a light source. Luckily, he's not limited to these.

And as extra, he hasteleportation and the ability to give consciousness where there is not.

He also lacks range, and is a lot weaker but is more strategic and good at planning.

2 pumpkin headed freak shows are ready to fight to the death- err... super death? banishment? Re-Death? Ehhh, you get it. Until one can't fight anymore.