|This article is archived. The content was relevant to an obsolete version of Warframe. Please do not use this article for critical in-game information.
Arn Etina was once the name of the final boss of Pluto, a black MOA found on Hades. Upon death there was a chance he would drop the parts required for Excalibur. Arn Etina's name was changed to Ambulas as of Update 6.
His game picture and appearance have since been repurposed for Darvo.