When gamers think of enemies that you wouldn’t want to confront in the real world, their minds usually wander to the Resident Evil series or something from Dead Space. Rarely does the kid-friendly enemies of the Super Mario franchise pop into the heads of fans.

With cute turtles, squishy goombas, and shy guys, who could actually be scared of enemies from this franchise? The truth is that some of the enemies of the Mario franchise would actually be a nightmare if players met them face-to-face. Below are some of the enemies that fans would never want to meet face to face from the Mario franchise.

10 Mad Piano

Mad Piano has long been the enemy of nightmare fuel, especially for young kids that have played Mario 64. This enemy can only be found in this one game, in a single room in Big Boo’s Mansion, where he guards one of the red coins players must collect in order to earn a star. Once a player gets close to the Mad Piano, it comes to life and chases them around with a gaping mouth full of teeth.

9 Piranha Plant

Piranha Plants are such normal enemies in the franchise that gamers often forget how terrifying they are. They are able to act completely docile until a gamer gets close enough to bite. Some use an even sneaker strategy where they only emerge from the ground when their victim is close enough to be set on fire.

Piranha plants have multiple evolutions and are terrifying species of enemy that would ravenously devour players regardless of how high they can jump.

8 Mattermouth

The Mattermouth both looks horrifying and has a horrifying ability. This enemy is able to indiscreetly consume matter. They are seen during Super Mario Galaxy 2 in the Haunty Halls Galaxy where they are hard at work literally devouring the level around them without leaving a trace.

The Mattermouth is able to consume everything around; you only leave a void space, which is completely unsettling.

7 Charvaargh

Charvaarghs seem like a hungry group of fellows that should never exist in the real world. Not only would they be way too happy to chomp down on anyone who goes by, but their bodies seem to be composed of a layer of lava that can kill any prey that touches it. Charvaarrgh does look kind of cute, but, like most dangerous animals, they should only be observed from a safe distance.

6 T-rex

Fans of the series were quite surprised when the T-rex was revealed to be an enemy. Thankfully for humans, this huge predator is extinct in our world and won’t be able to snack on any of us. If this enemy ever came over from Super Mario Odyssey, though, things would get rather grim. As terrifying as he is out of place, we’re not even comfortable with seeing this beast in the Mario universe, let alone our own.

5 Cat Banzai Bills

Normal Bullet Bills should already be concerning to gamers, but the Cat Banzai Bill is on a whole other level. These Bullet Bills try to lull players into a sense of false security with their admittedly cute outer appearance. Like normal Banzai Bills, these enemies can lock on to a player and chase them down. Being targeted by what at first appears to be an oddly shaped tuxedo cat seems like a whole new level of terror.

4 Unagi

Unagi is an unbeatable enemy that appears in a couple of the games. In his first appearance in Super Mario 64, players must coax the snapping beast out of the ship and later cave that is guarding. They later return in Super Mario Odyssey, where they once again try to dine on Mario.

Based on their sheer size alone, it’s likely that a real-world Unagi would wreak havoc on sailors around the world.

3 Cheep Cheep

Cheep Cheep can vary in size, and, for some reason, seem to have a taste for humans. Giant Cheep Cheep will swim in shallow waters waiting for a chance to eat Mario whole, all while having a completely innocent appearance. They do swim rather fast, so once you get to close, that’s it. The ocean depths already hold enough horrors, do we really want to add this one to the list?

2 Bomb Boos

Bomb Boos are ghosts that are able to do all the normal ghosts things while also being a bomb. This means that they can phase up behind players and explode, which really isn’t a fun thing to think about. While they do seem rather lazy with how they float around in Mario Galaxy, their existence is horrifying. Normal Boos crossing over into our world would be frightening enough, let alone ones that are literally undead weapons.

1 Kurokyura

Kurokyura is an enemy that can only be found in Super Mario Land 2. Kurokyura is an actual vampire that Mario must fight. He is able to shoot bats out at his victims, and it seems that he may be immortal, as he appears even after Luigi thinks that he has killed him. Kurokyura seems like an annoying enemy to deal with. He’s out of place in Mario’s world, so he’d be super out of place in ours.

NEXT: 10 Things That Make No Sense In Paper Mario: The Origami King