The Myu is the name of a peculiar slime that uses spikes on its upper side to defend itself and impale enemy and prey in The Adventure of Link.
The underside of a Myu is not generally seen. Link can use the Down Thrust technique to easily dispatch them.
The Adventure of Link Manual Comment
| Names in Other Regions
|| ミュー (Myū)
- ↑ "A special slime with thorns protruding from its body. They're small so use a downward thrust." (Adventure of Link manual, pg. 38)