Is Grubak Zapspitta Worth It in Warhammer 40,000: Tacticus ™?

Grubak Zapspitta is worth leveling to Silver I if your roster lacks ranged, armor-ignoring damage for the Octarius campaign or needs psychic wave clear in Onslaught. Because psychic attacks in Warhammer 40,000: Tacticus ™ bypass standard physical armor ratings, Grubak punches through high-armor targets like Black Templars, Death Guard, and Gravis-armored units that stall traditional physical melee Orks.

However, Grubak is a specialized niche pick rather than an all-purpose carry. Keep him at Silver I and delay pushing him to Gold or Diamond until universal staples like Eldryon, Bellator, and Re'vas are fully built.

Ability Upgrade Priority

Upgrading Grubak requires scarce Xenos ability badges. Prioritize his passive skill before investing heavily in his active.

Passive Ability (First Priority): Amplifies Grubak's regular attacks with continuous psychic scaling every turn without relying on cooldowns. Level this skill up to your current tier cap so his standard attacks consistently soften or eliminate armored front-line threats.
Active Ability (Secondary Priority): Releases an erratic psychic discharge that arcs through grouped enemies. It provides strong burst damage against dense enemy waves in Onslaught or Arena, but its situational usage makes it secondary to the steady turn-by-turn output of his passive.

Team Compositions and Positioning

Grubak's damage output scales based on his proximity to allied combatants—especially fellow Orks. He is physically fragile and lacks the defensive bulk of front-line Orks, requiring strict screening to prevent enemy focus fire.

Boss Gulgortz: Acts as Grubak's primary facilitator. Gulgortz provides a durable frontline presence, while his Waaagh ability grants bonus movement and extra attacks to reposition Grubak into safe firing hexes.
Snotflogga and Gibbascrapz: Flood the battlefield with Grots and summoned tanks. These disposable units create physical barriers against melee attackers while satisfying Grubak's ally proximity checks without endangering core heroes.
Eldryon: Buffs Grubak's burst damage against Guild Raid bosses through Doom.
Neurothrope: Synergizes with Grubak by stacking cumulative psychic suppression and shared debuffs against psychic-vulnerable targets.

Game Mode Breakdown

Game Mode	Viability	Strategic Role
Octarius Campaign	High	Bypasses high-armor Black Templar champions that stall melee Orks.
Onslaught	High	Wipes clustered incoming waves behind summoned tank and Grot screens.
Guild Raids	Moderate to High	Delivers burst psychic damage against bosses with heavy physical resistance.
Tournament Arena	Situational	Threatens grouped formations but dies quickly if caught out of position.

Next Steps for Your Roster

If you are stuck on heavily armored stages in the Octarius campaign or Octarius Elite, take Grubak to Rank Silver I and upgrade his passive ability to match your current cap. If your Octarius progression is already clear and your Guild Raid foundation remains incomplete, pause investment in Grubak to prioritize universal raid buffers.