| Name: | Roy de Graaff |
| Function: | DJ |
| Gender: | male |
| Aliases: | Dr. Deathtone, Mission X, Royal Sound |
| Member of group: | Hammerheadz |
| Birthdate: | |
| Age: | 26 |
| Origin: | Nederland |
| Genres: | darkcore, hardcore, industrial hardcore |
| Email: | rdegraaff85@hotmail.com  |
| Presence: |  |
| Member: |  r_OY |