Phantom Ganon

Phantom Ganon is the boss of the forest temple in Ocarina of Time. He is a puppet of Ganondorf and also has a Phantom horse. You basically do what you did to the 4 ghost sisters and shoot him when he comes out of a picture with your bow. If you run out of arrows don't panic. You can also use your hookshot. Then he will start trying to trick you in his next fase by making two of him. Hit the one that has purple around it because the other one will turn back. Its tricky but you get a heart container so its worth it.

phantom ganon also appear in The Wind Waker and you meet him on your second visit in forsaken fortress.

theory: on phantom ganon's sword you can see hylian text! the text says: "Zubora and Gabora" the two sword smiths from Legend Majora's Mask