Member of "The Family" of Penacony. The benevolent and self-disciplined Head of the Oak Family. Gray hair and golden eyes. Has small angel wings around the back of his head. Has a halo, representing his Halovian heritage.

Sunday comes off as a dignified, benevolent, and rational individual. He is revered, seeming determined and just. But beneath this, he possesses a twisted personality - possessive, meddling, overbearing. Has the urgent need to control. Loves his sibling dearly.