Boofly

Behaviour and Tactics
It floats passively and will not retaliate when attacked. Often found in platforming sections, where its massive bulk blocks the way and makes platforming more difficult. However, down-slashing it while jumping can sometimes help the player traverse through these difficult platforming sections more easily.

Trivia

 * Instead of leaving a corpse when defeated like most other large enemies do, their bodies simply burst shortly after being killed.