Yes, I know that Halberd isn't a silly name in and of itself, but... the rest of the line is Loki, Odin, Thor. Commonly referred to as the Asgard line. I can't recall any instance of Norsemen using halberds, nor any Norse god, goddess, or giant named Halberd.
Personally, I would suggest Tyr, god of single combat, heroism, and occasionally the leader of the Aesir (!?). Alternatively, Heimdall the watcher and Baldr (or Balder, depending on how you decide to translate) the beloved god of beauty are decently well known and sound fairly nice. Forseti is another option, being the god of justice and law... which the RHA seem to care about a decent bit. Njord, god of the sea, could also work in a pinch. Norse mythology is so damn cool, the names sound really cool, and it fits into the rest of the line. Please?