Twelve-year-old Sonica is never silent, but she can sure make everyone else muted. As her brother Sonicboy increases volume, she can mute it altogether. Tired of doing simple good deeds, Sonica longs for adventure and excitement and never fails to express it. Ex-friends with Invisigirl, she befriended new Ultrakid recruit Heather. Her brother and she are the mischief makers of the Ultrakids, constantly pranking but never so as someone would be hurt. OTHGG relies on Sonica to get the Ultrakids attention by using her power.

Favorite verse:Isaiah 56:10 "...they are all mute dogs, they cannot bark..."