A newer Rain basic attack added in an official Mortal Kombat 1 update.

Rain moves, skills and special abilities
Playable Mortal Kombat 1 fighter.
Basic Attacks
2Directional/basic attack.
Special Moves
9Special move.
Special move.
Special move.
Rain's portal-based teleport special, referenced in official WB patch notes.
Special move.
A Rain special move referenced in official Mortal Kombat 1 interaction notes.
Special move.
Special move.
Rain's water-based special move, referenced in official Mortal Kombat 1 balance notes.
Equippable Moves
1Equippable move.
Kombos
7Ground kombo string.
Ground kombo string.
Ground kombo string.
Ground kombo string.
Ground kombo string.
Ground kombo string.
Ground kombo string.
Aerial Kombos
3Aerial kombo string.
Aerial kombo string.
Aerial kombo string.
Fatal Blow
1Fatal Blow.
Fatalities
2Fatality. Perform at close range.
Fatality. Perform at mid distance.
Brutalities
7Rapidly press any attack button. Final hit: 100% Chance Of Pain.
Hold Back during the hit. Final hit: Waterwhirled.
Hold Down during the hit. Final hit: Attitude Adjustment.
Final hit: Ancient Trap.
Hold Down during the hit. Final hit: Rain God. Use from jump distance.
Hold Back during the hit. Final hit: Kraken Killer.
Hold Back during the hit. Final hit: Centrifugal Force.
Animality
1Animality. Perform at mid distance.