Jump Fire Knock is a Power Formation maneuver used by Team Rose in Sonic Heroes. When using this technique, Big the Cat fires his teammates Amy Rose and Cream the Rabbit as projectiles from the air.
When using Jump Fire Knock, Big enters Fire Combination and jumps into the air where he has either Amy or Cream Spin Jump off his shoulders. Big then uses his Fishing Rod to knock the teammate in baseball-style diagonally towards the ground with such force that the teammate turns into a fireball and creates an explosion upon impact that damage everything in the vicinity. This allows the player to damage enemies, break down doors and destroy obstacles from above.
To perform this technique in gameplay, the player must have Team Rose in Power Formation with Big as the leader. The player then has to enter Fire Combination and jump into the air, where the player has to press the action button (//) to fire the teammates. When used near targets, the thrown teammates will automatically home in on them. Additionally, the Jump Fire Knock can be used up to two times in a row, depending on the number of teammates Big carries.