Thor (Phineas and Ferb)

Thor is the nephew of Mrs. Weaver, the next-door neighbor of the Flynn-Fletcher family.

Biography
Thaddeus, Thor and their older sister Mandy visit their aunt for the weekend. Both Mandy and Candace argue over whose brothers are more annoying and competent. Phineas and Ferb, at Candace's request, agree to compete with Thaddeus and Thor to see who can build the best backyard fort. Thaddeus and Thor build a castle-like fort complete with a slide and a licorice dispenser, which becomes insignificant when compared to Phineas and Ferb's 20-story fort with a swimming pool and a bowling alley ("Thaddeus and Thor").

Personality
Not much is revealed about Thor's personality as he is extremely laconic (like Ferb). Unlike Phineas, who treats his brother as an equal, a partner in his projects, the arrogant Thaddeus treats Thor like his sidekick/lackey. When Thaddeus snaps his fingers and orders "Gum me!", Thor hands him a piece of bubblegum. When Phineas tries doing the same to Ferb, he sarcastically replies, "Please."

Physical Appearance
Thor bears an uncanny resemblance to Ferb, except that he is bulkier than Ferb and has yellowish-brown hair. His style of clothing resembles that of Phineas (T-shirt and low pants), while his brother Thaddeus wears high pants like Ferb.

Background Information

 * He seems to resemble Brian Griffin from Family Guy.
 * Like his brother:
 * He bears a resemblance to one of the brothers but has the style of clothing to the other,
 * He is named after a great deity (Thor the god of Lightning in Norse Mythology).

Appearances

 * "Thaddeus and Thor" (First appearance)
 * "Phineas' Birthday Clip-O-Rama!" (Non-speaking cameo)