Samurai Wasps wore yellow robes and had a distinguishable yellow vertical line in the middle of their Oni masks. Their wings were a darker shade of yellow and they carried a Katana as their weapon. The rope that ties their robe were colored in red.
The wasps themselves are not particularly hard to defeat, but they are challenging in numbers and are one of the fastest enemies that can dodge attacks.
To bypass these obstacles, the Clockwork Bomb can be used to distract the Samurai easily. At a distance, the Teapot Cannon can kill them fairly easily.
Another way to kill these Oriental Terrorists is to explode the bomb before its time expires. This leaves them dazed, which Alice can use to lay heavy blows from the Hobby Horse. This breaks off their main defense, the Oni Mask that conceals their wasp faces, and leaves them much more susceptible to defeat.