Captain Toben Ironspan is a member of the gnome border guards facing the goblin lands (Red Caps).
The party met him Session 75 when he arrived at the call of the patrol that found the party and two charmed goblins. The gnomes offered to let the party deeper into the gnome lands but either the party or patrol had to kill the goblins. The invisible Chesty made the goblins invisible, claiming they ran off in the night. The gnomes bought it and escorted the party through the gate in the pass that lead to the town of Hilduar.