Some other notable users of Tyranitar:Actually, it was in Colosseum. Evice has a Shadow Tyranitar as his ace Pokémon.
Roark in his rematches at the Battlegrounds (Platinum)
Blue in his rematches at the Fighting Dojo (HGSS)
Grimsley in his Challenge Mode Rematches (B2W2) and an option in the Battle Tree (Gen VII).