Mosquitoes

Mosquitoes (nickname, original name unknown) are Tracker enemies which follow the player shortly before exploding. They heavily rely on quantity over quality in order to defeat the player, however have medium-speed.

Enemy
The Mosquitoes are medium-speed enemies, letting the player escape whilst also focusing on other enemies. While they do have medium speeds, do not underestimate the Mosquitoes. They almost always come in large quantities and swarm the player. They are timed enemies, meaning that once triggered they will eventually explode. The way to trigger them is by getting close enough and then they will follow you.

Tactics
The time until explosion is slightly long, and the explosion radius is just large enough to render a wall's protection useless. While you can easily run away into a different location when fighting them without any other enemies, they become extremely hard to deal with while battling other strong enemies, as seen at 2:38 of Mix Survival. Using the Bubble Move against them merely pushes them away a small distance, so only use it when you can use a spare Bubble.