Parentage[]
Volume 1 quotes:
"Since our grandfather was from England, we both have blonde hair and light-brown eyes... so everyone's gonna know that we're brother and sister."
But which parent was the half-breed? Is it Mrs. Mudo? (Perhaps she shows up on-screen with 100% Japanese features?) --Gwern (contribs) 20:49 8 August 2011 (GMT) 20:49, August 8, 2011 (UTC)