The Great Space Invasion Running Team Hashiriyan is the spacefaring criminal group that invades planets and harvests negative energy called Ghassolin.

Their attacks on Earth create the central conflict of the series, forcing the Boonboomgers to protect people, complete their missions, and challenge Hashiriyan's control of space routes.

Waruido Spindo is the leader of Hashiriyan and the main antagonist of the series. His past with Bundorio Bunderas makes the final conflict deeply personal for both Bundorio and Taiya.

Spindo seeks to dominate through fear, Ghassolin, and betrayal, pushing the Boonboomgers into their most dangerous race for Earth's future.

Decotorade is one of the Sanseaters, the recurring Hashiriyan trio that attacks Earth to gather Ghassolin. He favors loud, flashy tactics and often leads the group's schemes in the field.

Itasha is one of the Sanseaters and works with Decotorade and Yarucar during Hashiriyan operations. Her style mixes vanity, cruelty, and theatrical confidence.

Yarucar is a small Hashiriyan member who works with the Sanseaters. He helps create and support Kurumaju during the group's attempts to collect Ghassolin from Earth.

Kurumaju are the monster threats created by Hashiriyan activity. They are born from vehicles or objects affected by Hashiriyan power and negative energy.

Each Kurumaju turns an ordinary situation into a dangerous mission, forcing the Boonboomgers to protect civilians while stopping Hashiriyan's Ghassolin collection.