Bold indicates a Pokémon which gets STAB from this move. Italic indicates a Pokémon whose evolution or alternate form gets STAB from this move.
In other games
Pokémon Ranger: Shadows of Almia
In Pokémon Ranger: Shadows of Almia, Dialga is available in a Special Mission. At the beginning of the mission, it uses Roar of Time to send the player and Wendy back in time to before the player moved to Chicole Village. If the player fails to capture Dialga within a hidden time limit, Dialga will send them back to the beginning of the mission.
In the anime
Shoots off the indigo beam
Fins on backside extend
The user shoots a beam of energy from its mouth capable of distorting time.
Dialga's eyes glow orange and the diamond on its chest glows blue. The fins behind it grow larger and Dialga opens its mouth, an indigo ball forming in front of it. It then fires an indigo beam from the ball at the opponent. After the attack has been fired, the fins on its back shrink back to normal size.