Reaper

The Reaper a high-ranking Nobody controlled by Marluxia that is found in Kingdom Hearts III.

Kingdom Hearts III
''That scythe isn't your only worry; these floral fiends have a punishing petal attack as well. And a trio of Reapers can team up to bloom-bomb a much broader area.''

Their flower bud form may be immune to normal attacks, but as a rule, plants don't fare well against magical flames.