Goma steps northeast and claims the area around himself for the party amd roars a challenge at the bug thingy.

Spoiler: Combat
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AC: 28, DR 8/-, 13 temp HP

Free action: Berserking.

5ft step northeast.

Swift action: Challenge the bug for 8 rounds, giving it +2 to hit Goma, and -4 to hit anyone else.

Standard action: Set up a Patrol, increasing Goma's threatened area by 15 ft.

Ironwall: Any ally within Goma's threatened area has a 20% miss chance. Any ally the bug attacks within 50ft of Goma has a 20% miss chance. An ally within Goma's threatened area, attacked by the bug has a 50% miss chance.

AOOs: Spend 3 to make AOOs, spend 7 to use Active Defense + Smashing Counter on the targets of the bug's attacks. This grants +4 AC, and if the attack misses, Goma gets a free action shield bash.