Unlockable characters are all obtained by buying them in the store. From Guitar Hero 5, characters can be unlocked by beating the song they appear in or completing a particular song's challenge. Some are only available in the store after beating certain difficulties, or (in the case of Slash, Tom Morello, and Lou) you have to first beat them in a boss battle before being able to purchase them in the store.
Unlockable characters include:
- Tom Morello
- Metalhead (Wii/PS2 exclusive)
- Elroy Budvis (Wii/PS2 exclusive)
- God of Rock (Xbox 360/PS3 exclusive)
- Grim Ripper (Xbox 360/PS3 exclusive)