Ryusuke Owashi was called away to pilot a special NASA mission, and so pilot and swordsman Takayuki Hiba took his position as VulRed.
The Snack Safari chef Sukehachi Yazawa correctly suspected the identities of Sun Vulcan. Playing off of this, the Zero Girls posed as an unofficial ally to the Solar Squadron and staged a fake audition for him to join their ranks. They outfitted him with a radio transmitter. Using this, Crystal Monger was able to break into the top portion of Sun Vulcan's base. Sun Vulcan was able to trick him into sneaking into the their pool, where they captured him.
Sun Vulcan was temporarily defeated by Rose Monger, Black Magma's top fencer who possessed a sword technique that surpassed that of the Sun Vulcan Robo's finisher. Until Takayuki Hiba could diagram her attack, Tokyo was defended by the White Rose Fencer.
When Curse Monger summoned three ghosts that the Solar Squadron could not touch, Sun Vulcan was humiliated. Sun Vulcan was able to defeat them in Hell and rehabilitated their souls.