Brachypelma Worm Aurantium is a Worm of the tarantula-like Brachypelma sub-class and an antagonist in episodes 21 and 22 of Kamen Rider Kabuto.
Kamen Rider Kabuto
Viridis, alongside his fellow Brachypelma Worm Aurantium, served as one of the guards of the Worm Eggs. He copied Arata Kagami's form before being destroyed by Gatack with his Gatack Vulcan.
Kamen Rider G
When Kamen Rider G attempted to stop Shade and free their hostages, one of the members of Shade transformed into Brachypelma Worm Viridis. He was destroyed along with the other three Shade members who had become the Subst Worm, Acarina Worm and Cochlea Worm.
Kamen Rider Decade
Brachypelma Worm Viridis,, along with Brachypelma Worm Aurantium was among the Dai-Shocker forces stationed in the World of Black RX. It was defeated alongside Aurantium by the A.R. Kamen Rider Black R.X.