here are at least three bands using this band. 1. Dagger was a canadian Hard Rock/Heavy Metal band from the 80s. They released a album called Not Afraid Of The Night in 1985. 2. Dagger was a mexican metal band. There are four bands named Dagger. None of them is currently active DAGGER was born during the first months of 2004. Conceived by guitarist and singer Gaby de la O, Dagger's main objective was to attack the lack of girl bands in Mexico and the idea that "girls can't play".