Piggyback Throw is a back throw exclusive to Paul Phoenix from Tekken 4 onwards.
Trivia
- The Tekken 5 command list demo in Practice Mode has a bug where Paul always performs his Reverse Neck Throw instead of his Piggyback Throw, as the demo is coded to use 1+3 instead of 2+4 (the move list incorrectly states to use either 1+3 or 2+4, which hasn't been possible with Paul since Tekken Tag Tournament).