New Super Mario Bros. Wii/Enemies

Goombas

 * Goomba
 * Paragoomba
 * Micro Goomba
 * Grand Goomba
 * Mega Goomba

Koopa Troopas

 * Green Koopa Troopa
 * Red Koopa Troopa
 * Green Koopa Paratroopa
 * Red Koopa Paratroopa

Piranha Plants

 * Piranha Plant
 * Venus Fire Trap
 * Super Piranha Plant
 * Super Venus Fire Trap
 * Stalking Piranha Plant
 * River Piranha Plant
 * Muncher

Hammer Bros.

 * Hammer Bro.
 * Boomerang Bro.
 * Fire Bro.
 * Sledge Bro.
 * Ice Bro.

Beetles

 * Spiny
 * Buzzy Beetle
 * Spike Top
 * Para-Beetle
 * Heavy Para-Beetle

Cheep-Cheeps

 * Cheep-Cheep
 * Mega Cheep-Cheep
 * Deep-Cheep
 * Mega Deep-Cheep
 * Spiny Cheep-Cheep
 * Cheep Cheep School
 * Porcu-Puffer
 * Cheep-Chomp
 * Fishbone

Other Water Enemies

 * Blooper
 * Blooper Nanny
 * Baby Blooper
 * Urchin
 * Mega Urchin
 * Huckit Crab
 * Clampy
 * Bulber
 * Jellybeam

Artillery Enemies

 * Bullet Bill
 * Banzai Bill
 * Missile Bill
 * Missile Banzai Bill
 * King Bill
 * Bob-omb
 * Para-bomb
 * Chain Chomp
 * Fire Chomp
 * Amp
 * Rocky Wrench
 * Mecha-Koopa

Ghosts

 * Boo
 * Big Boo
 * Circling Boo Buddies
 * Broozer
 * Scaredy Rat
 * Ghost Vase
 * Crowber

Fire Enemies

 * Podoboo
 * Fire Snake

Others

 * Monty Mole
 * Swooper
 * Pokey
 * Bramball
 * Spike
 * Stone Spike
 * Wiggler
 * Mega Wiggler
 * Cooligan
 * Fuzzy
 * Mega Fuzzy
 * Foo

Object/Obstacles

 * Cannon
 * Cannonball
 * Giant Cannonball
 * Rocket Engine
 * Spiked Ball
 * Giant Spiked Ball
 * Spiked Pillar
 * Giant Spiked Pillar
 * Ball 'n' Chain
 * Firebar

Fortress/Castle Enemies

 * Dry Bones
 * Super Dry Bones
 * Thwomp
 * Super Thwomp

Bosses

 * Larry Koopa
 * Roy Koopa
 * Lemmy Koopa
 * Wendy O. Koopa
 * Iggy Koopa
 * Morton Koopa Jr.
 * Ludwig von Koopa
 * Kamek
 * Bowser Jr.
 * Bowser
 * Giant Bowser