How do you beat froslass?

Froslass is an Ice and Ghost-type Pokemon so Fire, Dark and Ghost-type Pokemon such as Charmander, Charizard, Vulpix, Ninetales, Magmar, Mortar, Slugma, Magcargo, Torkoal, Cyndaquil, Typhlosion, Torchic, Blaziken, Infernape, Monferno, Braixen, Delphox, Growlithe, Arcanine, Gastly, Haunter, Gengar, Misdreavus, Mismagius, Murkrow, Honchrow, Sneasel, Weavile, Rapidash, Moltres, Entei, Heatran, Houndoom, Camerupt, Groudon, Victini, Tepig, Emboar, Pansear, Simisear, Darumaka, Litwick, Chandelure, Heatmore, Reshiram, Talonflame and Pyroar would be able to beat it.