Amphysvena is a purple and black two-headed Omnigear with a long tail seen at Mahanon, Golgoda and Merkava. There was some controversy as to whose Omnigear this really is: some people say this is actually Karellen's Omnigear, while others argue that it is Ramsus' Omnigear, Vendetta, aligned with a new Anima Relic. However, a translated description on Amphysvena's Xenogears Perfect Works page clearly identifies it as Karellen's Omnigear. This is backed up by the fact that Amphysvena is seen at Mahanon and Golgoda, which are two places that Ramsus does not go to while Karellen does. Karellen gave it to Ramsus to pilot at Merkava because Ramsus can align with any Anima Relic and pilot any Omnigear.