Those penguins have appeared in a few Team Umizoomi Episodes.
Umi City Penguins
He appeared in A Sledding Snow Day. He gave the team directions to the ice bridge and was later seen sliding down on its tummy upon the slope telling them to "Stay cool!"
These penguins live at the zoo in an exhibit full of snowbound hills. They were only seen in Purple Monkey Mission.
The Baby Penguins
Fifty adorable penguins are the team's top priority to help them in City of Lost Penguins. The Troublemakers sent them all over Umi City and caused them to get lost all over Umi City. Team Umizoomi soon found all of the penguins, and UmiCar carried them in an ice cube wagon with fifty slots in rows of five. They were soon happily back in their zoo home and let Team Umizoomi play with them in the home where they belong.
Iceberg Bay Penguins
He was seen in The Great UmiCar Rescue when he got his foot stuck in an iceberg. UmiCar then came to the rescue and pulled him out of the ice. The penguin then hugged his mother.
The mother of the baby penguin that UmiCar rescued at the beginning of The Great UmiCar Rescue. The baby penguin after being rescued ran over to her and gave her a big hug, so adorable!