|This article is about a/an character in Kamen Rider Kabuto.|
Masato Mishima (三島 正人 Mishima Masato) was the aide of ZECT HQ's leader, Riku Kagami. Alongside Riku Kagami, he is part of ZECT's inner circle who has secretly sided with the Worms by constructing the Jacob's Ladder station to allow the Next-Worms to invade.
Riku Kagami and Masato Mishima ordered the construction of the Jacob's Ladder space station under the guise to capture a meteor as a means to spread its water throughout Earth, replenishing the Earth’s oceans. Unbeknownst to the public, the meteor contained the Next-Worms and ZECT has sided with the Worms.
After Shura Hokuto uncovered ZECT's true motives for constructing Jacob's Ladder, Riku ordered her to be killed, although the latter survived long enough to inform Tendou of ZECT's plan.
Later, Kabuto uses the Hyper Zecter to travel back in time to send the Next-Worm meteor to crash into the original meteor, averting the future where Earth was devastated by the meteor.