1. Bullet Bill
  2. Snifit
    wears a gas mask
  3. Chargin' Chuck
  4. Bob-omb
    It's a bomb named Bob. Duh.
  5. Thwomp
    Giant spiky cinder block with a face that falls on your head and smushes you.
  6. Thwimp
    Tiny version of a Thwomp
  7. Shy Guy
  8. Rip Van Fish
    Sleeping fish that wakes up and chases you if you swim too close.
  9. Cobrat
  10. Scarracuda
  11. Tri-Clyde
    Snake boss with three heads.
  12. Ptooie
    Spits spiked balls
  13. Morton Koopa Jr.