- Hey, It's That Voice!: When Haseo, Kuhn, and Piros III are together, it's a party of Yosuke, Vash the Stampede, and Cosmo. And so much more.
- No Export for You: The one-episode sequel OVA, .hack//G.U. Returner, has not been localized officially and there is no indication it ever will be. It's a real shame, since it clears up a lot of confusion in the ending. The games also never saw a release in certain parts of the world.
- The Other Darrin: The entire English cast changes between .hack//Roots and the G.U. series. Roots was dubbed by The Ocean Group in Canada while G.U. had dubbing done in California.
- Relationship Voice Actor: All over the place; to the point where Transformers: War for Cybertron brought back at least half the voice cast.