In Mortal Kombat 9 (2011 version) for the PS3 and Xbox 360, each character has multiple fatalities that they can perform at the end of the match.
This is the list of all finishers (fatalities, babality, and stage fatality) for Kenshi.
These can be unlocked and added to your moves list by performing them in either Arcade Mode or Versus Mode.
Check out these complete fatality guides for more finishing moves:
Fatalities and babalities for Mortal Kombat on Xbox 360
Fatalities and babalities for Mortal Kombat on PS3
Kenshi’s Fatalities & Finishing Moves
Xbox 360
Scatterbrained – Up, Down, Up, Down, RT within sweeping distance
Split Ends – Back, Forward, Down, Forward, Y in jumping distance
Babality – Down, Back, Down, X in jumping distance
Stage Fatality – Down, Foward, Down, A in close range
PS3
Scatterbrained – Up, Down, Up, Down, R2 Sweeping distance
Split Ends – Back, Forward, Down, Forward, Triangle Jumping Distance
Babality – Down, Back, Down, Square Jumping Distance
Stage Fatality – Down, Foward, Down, X Close Range