B

• [+] BSL‎ (8 C, 113 P)

P

• [×] Phase 1‎ (11 P)
• [×] Phase 2‎ (15 P)
• [×] Phase 3‎ (20 P)

P cont.

• [×] Phase 4‎ (21 P)
• [×] Phase 5‎ (4 P)
• [×] Phase 6‎ (7 P)
• [×] Phase 7‎ (17 P)

P cont.

• [×] Phase 8‎ (11 P)
• [×] Phase 9‎ (9 P)

X

• [×] X‎ (34 P)

• SR388

A

• Acid
• Alpha Metroid
• Arachnus
• Autoad
• Autom
• Autrack

B

• Baby
• Big Energy Ball
• Biologic's research team
• Blob
• Blob Thrower

C

• Chozo
• Chozo Statue
• Chute Leech

D

• Drivel

E

• Energy Tank

F

• Fake Block
• Flitt

G

• Galactic Federation Special Squadron
• Gamma Metroid
• Gawron
• Glow Fly

G cont.

• Gravitt
• Gullugg
• Gunzoo

H

• Halzyn
• Hornoad

I

• Infant Metroid

L

• List of creatures in Metroid II: Return of Samus
• List of items in Metroid II: Return of Samus

M

• Meboid
• Metroid (Species)
• Metroid Egg
• Missile Battery
• Missile Expansion
• Moheek
• Moto
• Mumbo

N

• Needler

O

• Octroll
• Omega Metroid

P

• Pincher Fly
• Planet Reclamation Division
• Proboscum

Q

• Queen Metroid

R

• Ramulken

S

• Sand
• Save Station
• Seerook
• Senjoo
• Septogg
• Shirk
• Skorp
• Skreek
• Space Research Vessel Marina
• Spike

T

• TPO
• Tsumuri

U

• ULF 2 (Metroid II: Return of Samus)
• US 1

V

• Vegetation

W

• Wallfire
• Water

X

• X Parasite

Y

• Yumbo
• Yumee

Z

• Zeta Metroid