Umi-Friend, That's you. You are definitely a nice member of Team Umizoomi. You've got Mighty Math powers to help.
Umi-Friend is what Team Umizoomi refer to the viewers watching the programme.
Milli: (In early episodes) Umi-Friend, you're mighty good at math. We're so glad you're on our team.
Milli: Umi-Friend, that's you! You've got mighty math powers, too! Let's see your mighty math powers! Count down with me! Start with five: five, four, three, two, one!