"Well, now there’s a mod for that."
The following is unofficial/fan-made content.
Ninjis are a ninja like enemy in the Mario Franchise which first appeared in Super Mario Bros 2. They are most known for jumping up and down in place.
In-Game[]
They are placed from the in-game editor in Alesan99's Entities. It jumps up 3 blocks high repeatedly after being spawn, they have no horizontal movement at all. It takes only one hit to kill.
Trivia[]
- Ninjis are used in Mario Maker 2 for speedrun minigames.