Nirvana’s remaining members are not happy about Kurt Cobain’s character being featured in the new Guitar Hero game the AP reports.

Krist Novoselic and Dave Grohl said in a joint statement Thursday that they were “dismayed and very disappointed” that an avatar of the late Nirvana frontman could be used to play songs by other artists.

“While we were aware of Kurt’s image being used with two Nirvana songs, we didn’t know players have the ability to unlock the character,” they said. “This feature allows the character to be used with any kind of song the player wants. We urge Activision to do the right thing in ‘re-locking’ Kurt’s character so that this won’t continue in the future.”

Also, Courtney Love, Cobain’s widow, had been lashing out on Twitter this week about her late husband’s inclusion in the game, calling it vile and claiming she would sue Activision, the game’s publisher.