Why is Red the King of Fire, though? I might be forgetting something about Alkaiser’s flavour or plot, but not a single Alkaiser ability is fire-elemental, nor is there anything else associating Red or Alkaiser with the element mechanically. I guess you can argue phoenixes should be but the attack doesn’t look especially firey even. Ah well, I guess you can milk that phoenix association if you want. I’d suggest Ephraim (fire affinity, Siegmund is the lance of fire, he becomes king) but he was already used (rather nicely) for the six so yeah.