Gru Rasu
Gru Rasu was a gangster and a derata in the era of BHH, and an important character in older versions of BHH. Before 2015, he was equivalent to a key character; after 2015, he was a backstory character, important in 2016 and early 2017 but declining in prominence over time and becoming a minor character by 2019. Like all Rasunians, Gru had the ability to instantly create Inuta wormholes. Particularly in older sources, as a Rasunian he was supported by a mission control room on Rasu that he communicated with via a wormhole radio. He started his career as a rum-runner and was already known in the Dark Network as a gangster by the time he became a derata.
Gru was working with his fellow derata Ciarraí Teagwyn Kavanah by eight years before the main events of BHH. The two rescued Ro Elluna from Helltuna after she assassinated the emperor and she joined them. Gru fell in love with Ro and they got married. Three years later, Raven Olympia faked Gru's death, wiped Ro's memories of him, and gave Ciarraí a false memory of Gru being shot. In most sources, he remarried and lived a peaceful life in the Helltunan colonies protecting the Jenner Gate, though in a few he eventually died in battle.