Main article: Kowalski & SkipperKowalski is Skipper's second in command and first younger older brother.
As children, Rico helps Skipper come up with their signature flipper slapping called the "high one." Because of his useful storage, Skipper comments that Rico is a "valued member of [their] team.
They both have a love of destruction in the series, while it lacks in the films. However, in "Kaboom and Kabust" Skipper's love for destruction is not as strong as Rico's. He also fears that if Rico goes through stunts too much, then he'll over react with it.
Main article: Private & SkipperPrivate is the youngest of Skipper's brothers and also their rookie whom Skipper calls the penguins' "secretary/mascot".
Main article: Skipper & Julien
Hans is the reason why Skipper isn't allowed in Denmark. He once attempted to replace Kowalski, Rico and Private, but Skipper caught on and rejected him. He has revenge on Skipper again when partnering with Dr. Blowhole. which led to Skipper's almost downfall. Later, the puffin and him are considered "frenemies".
There are hints that Hans is homosexual and has a crush on Skipper.
Out of all the penguins, he has the greatest animosity against Skipper. Blowhole calls him his "number one enemy". Skpper dislikes Blowhole very much and defeated him numerous times.
Skipper did not know Dave after their first encounter when he, Kowalski, Rico and Private were children. They stayed there long enough for Dave to know their names. However, Skipper hardly remembers his name unless someone corrects Skipper the guy's real name. However, Skipper grows worried when Dave kidnapped Private and the ohter Shanghai penguins and wishes to bring him down. Especially after believing Private to be killed, Skipper hates him. Then, seeing Dave in the globe and gives him away to a little girl.