Mumbo is a species on SR388. It is an enemy encountered in Metroid II: Return of Samus and Metroid: Samus Returns.

In Return of Samus, the Mumbo flies with the same pattern and rate as the Pincher Fly, but it causes slightly more damage to Samus Aran through physical contact.

In Samus Returns, it is now a swarming creature that can overwhelm Samus, and inhabits superheated rooms in Areas 3 and 4.

Official MediaEdit

Metroid II manual
"This enemy flies in the air."

Metroid: Samus Returns Official Guide

Inhabitants & Eco System of SR388 (p. 19)
"You don’t encounter Mumbo swarms often, but in those rare instances, expect to find them in lava-filled rooms. They don’t offer much in the way of threats and can be easily disposed of, but that doesn’t mean you should ignore them. They often fly in a path that crosses right into yours."
Walkthrough (p. 98)
"These pack animals are rare and generally harmless unless you get in their way. Like other swarming enemy types, Mumbos are excellent sources of health, Aeion, and ammunition. Turn on your Lightning Armor and melee away to obtain an abundance of resources."