OTG attacks play a large roll in Ultimate Marvel vs Capcom 3. In this later installment of the game every character has been given an attack that has OTG properties which allows a grater freedom in team match-ups and increases the length of combos. Below is a list of each character's OTG attack.
Command
Damage
Name
Captain America
qcf + l , airok
60,000 X 2
Shield Slash
Deadpool
dp + h
70,000
Katana-Rama!
Deadpool
air qcf + l
70,000
Trigger Happy
Doctor Doom
m
40,000 X 2
Standing Medium
Doctor Doom
h
55,000 X 2
Standing Heavy
Doctor Doom
b + h
20,000 x 1 ~ 8
Hidden Missles
Doctor Doom
qcf + atk
20,000 X 4 ~ 12
Plasma Beam
Doctor Doom
qcb + atk + atk
20,000 X 25 ~ 50
Photon Array
Doctor Strange
qcb + m -> qcb + h
90,000
Flames of the Faltine
Doctor Strange
qcf + atk + atk
33,000 x 10
Spell of Vishanti
Dormammu
df + h
20,000 x 5
Flame Carpet
Dormammu
dp + atk
35,000 X 4
Purification
Dormammu
qcb + h (after dark spells)
variable
Liberation
Dormammu
dp + atk + atk
400,000
Dark Dimension
Ghost Rider
b + h
35,000 per Hit
Heartless Spire
Ghost Rider
qcf + l
20,000 per Hit
Hellfire
Ghost Rider
dp + atk + atk
20,000 x 11
Spirit of Vegeance
Hawkeye
qcb + l -> atk
50,000 - 80,000
Trick Shot
Hawkeye
dp + m
25,000 per Arrow (up to 10)
Ragtime Shot (Kamikaze)
Hawkeye
dp + atk + atk
50,000 per Arrow (up to 7)
Kiss of Fire
Hawkeye
qcb + atk + atk
430,000
Tag Team Special
Hulk
charge b , f + atk
40,000 X 4
Gamma Wave
Hulk
qcf atk + atk
80,000 X 4
Gamma Tsunami
Iron Fist
qcb, m
85,000
Crescent Heel
Iron Man
dp + atk + atk
30,000 + 10,000 X 35
Angled Proton Cannon
Magneto
Magneto
MODOK
Nova
Nova
Phoenix
Rocket Raccoon
Rocket Raccoon
Rocket Raccoon
Sentinel
She Hulk
She Hulk
Shuma Gorath
Shuma Gorath
Spider-Man
Storm
Storm
Storm
Super-Skrull
Super-Skrull
Super-Skrull
Super-Skrull
Taskmaster
Taskmaster
Thor
Thor
Wolverine
X-23
Work in Progress!!!