New to all this, and called my Guardian “Perrun Portent”.
“Piorun” (or “Perun”) being the Slavic god of lightning (equivalent to Thor) and “Portent” meaning either “a sign of impending catastrophe” or “an exceptional person or thing”.
Thought it had a nice ring to it. Was going to go with “Ullar Ultime” but apparently “Ullr” (Norse god of war) is more connected with archery.
Oh, as for “Nixxi” – I like it. Short, snappy, sweet. 9/10.