Here are a couple fun combos that only work against the computer...
TKS, high RH, TP, TKS, RH, TP, TKS, (Autocombo)HK, LP, JK, fireball
TKS, HP, HK, TKS, HP, HK, TKS, HP, HP, HP
TKS, HP, HP, JK, TKS, HP, HP, walk in JK, sweep, JK
This one works great against male and female ninjas, cus they SUJK after the sweep and when your JK connects, it counts towards the combo. You can start it with an uppercut and it counts that, too.
These also work against a human player that doesn't have a block button.
TKS, high RH, TP, TKS, RH, TP, TKS, (Autocombo)HK, LP, JK, fireball
TKS, HP, HK, TKS, HP, HK, TKS, HP, HP, HP
TKS, HP, HP, JK, TKS, HP, HP, walk in JK, sweep, JK
This one works great against male and female ninjas, cus they SUJK after the sweep and when your JK connects, it counts towards the combo. You can start it with an uppercut and it counts that, too.
These also work against a human player that doesn't have a block button.