Mifunes and their palette swaps appear as ninja-like enemies. Accordingly, they move fast around the screen and are constantly jumping around, making it harder to hit them. Some of them will be carrying kunais or swords, which they use for a deadly spinning attack. In the third game they are also able to throw shuriken while airborne.
- Mifune and all of it's variations are named after famous martial arts actors, like Mifune (Toshiro Mifune), Chiba (Sonny Chiba), Kosugi (Sho Kosugi), etc.
- In Streets of Rage 4, the Shadows (black palette swap's of Murphy) fight similarly to Mifune's, fast, agile, and throw their shurikens at their foes.