Powers Oast

Walter is a weatherman that almost always is wrong about the weather. Because of this, many characters on the series and even his own family poke fun or get mad at him. His main rival is the successful Bruce Winchill, another weatherman mentioned in many episodes, who is known for his accurate forecasting and "good-looking hair".

In the pilot, Walter gets married to Audrey Parker, and thus becomes Drake and Megan's stepfather. However, both don't show much respect for him, many times refusing calling Walter "dad" and often get annoyed by him. Yet, his biological child Josh respects him and has repeteadly defended Walter from the insults of Audrey's children, though sometimes he agrees that his father acts goofy and somewhat clumsy.

In The Affair, it's shown that Walter is allergic to cumin.

Walter was portrayed by Jonathan Goldstein.

Personality
Walter is shown to be geeky and clumsy, who loves magic tricks and electronical devices. He is also very playful, as he often crack jokes to cheer up people, though nobody finds them funny at all. Still, he is a bit strict and persistent about the conduct of Drake, Josh and Megan. Despite that, Walter is portrayed as a caring and kind father.

Walter isn't aware of Megan's constant pranks on Drake and Josh, so he almost never shows severity towards her. On the other hand, Walter is often scolding and punishing her brothers for things she did, as they are never able to show him what really happens.

Audrey Parker Nichols
Walter and Audrey are a happy couple and almost never fight. The only episode where they have a real fight is The Affair, where it was kinda Drake and Josh's fault. Yet, Audrey prefers Walter's competitor, Bruce Winchill as the weatherman along with Megan.

Josh Nichols
Josh is very similar to his father. Both like magic tricks and are considered awkward. Josh is the one that most respects Walter, and often defends him in many situations.

Drake Parker
At first, Drake didn't like Walter and hardly talked to him. In The Bet, Walter is on Drake's side and thinks he will beat. In the episode Guitar, Walter tries to befriend Drake. Drake often calls Walter by his name, but still calls him "dad" most times.

Megan Parker
Unlike Drake, Megan almost never calls Walter "dad". She also mocks him for his "awful" job and thinks he is goofy. For Walter, Megan is his sweetest and most innocent child.