Cordia's, Clive's, and Calvin's names before they where penguins. They all start with J. Same with their counter parts- Corden, Claudia, and Celia.

Penguin and Human Names.

Penguin Name: Cordia- Human Name: Julie.

Penguin Name: Clive- Human Name: Julio.

Penguin Name: Calvin- Human Name: Julia.

Penguin and Human Names 2.

Penguin Name: Corden- Julian.

Penguin Name: Claudia- Juliana.

Penguin Name: Celia- Julius.