A1: Use the scooby doo power orb on on it when the dragon comes down then use it and then dodge its attacks

A2: Ok, destroy the crates to collect mubber, then put the mubber in the macine, then transform into Kung Fu Scooby Doo, when the Dragon is charging at you, use the Mega Strike by pressing the O button, when you will hit the dragon, he wll get electrified and some of it's tail would burn of to bone, NOTE: when he's half way dead, his eyes will turn nto UV lamps wich will make you lose you Kung Fu costume so when his eyes turn into UV lamps don't get to close to his face.

P.S. the person who is Zen Tuo is someone you know in the game......
But it's not Jed just so you know