Alpha Grims are an elite form of Grim that appears in the co-op campaign of Resistance 2. The Alpha Grim strain are larger, stronger, brighter in appearance than normal Grims, and have a very strong resemblance to the Gray Jacks from Resistance: Fall of Man. The cocoons of Alpha Grims are twice as big as regular Grim cocoons and look brighter in appearance. Also, Alpha Grims attack in numbers of between three-five at a time. Alpha Grims appear to be the Primarch command units for the Grim strain, but it is currently unknown as to how high their rank is in the Chimera chain of command; however, their strength symbol is 1 star.