Here is a thread for fusion ideas. Anyone can list their fusion ideas here.
Crashadactyl
Appearance: Has the body of Astrodactyl with the features of Crashhopper. His skin is the same color as Crashhopper now. He has Crashhopper's mask thing on his eyes. He wears a suit similar to Craashhopper and Astrodactyl combined. He has Crashhopper's legs.
Powers: Same as Crashhoper and Astrodactyl; however, because of his jumping and flying, he can release a propulsion effect from his jetpack that can destroy roads and creates gigantic prints in the ground.
Weaknesses: Same as both except his jumping abilities will be dangerous if he jumps and uses his jetpack at the same time.