Gabbo and Greywing have the Always Strikes First special rule when fighting War Beasts, Monstrous Infantry, Monstrous Cavalry and Monstrous Beasts.
Source: Warhammer Armies Project: Unofficial 9th Edition
Gabbo and Greywing have the Always Strikes First special rule when fighting War Beasts, Monstrous Infantry, Monstrous Cavalry and Monstrous Beasts.