Rule clarification: My understanding of the {Regalia} effect is that attacking the {Regalia} warrior is always considered a direct attack, so an effect like "this card can attack directly" doesn't change anything, if the Judge wants to allow it, the effect could allow you to bypass {Blocker} or {Inconspicuous}.
Also yes, Lance Walters is named after Handler Walter from AC6, the un-fuseing mechanic was based on the weapon damage system from the Lancer ttrpg, an other inspiration for their name.