Thaddeus Griffin

**Thaddeus Griffin**
	;
Full Name:	Thaddeus Griffin
Voiced by:	Seth MacFarlane
Age:
Jobs:
	Quotes:; "Nyah!"
	Episodes:; FG502 "Mother Tucker"

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Thaddeus Griffin is Peter's evil twin brother. He shows up when Peter's mother leaves her husband, declaring this new event will surely affect his inheritance. In the episode Padre de Familia, it is shown in a flashack that Peter was born alone, with Thaddeus nowhere to be seen, even though it is possible that he was born one hour or so later. He only appears in the episode Mother Tucker. He may be just a throw away character used for the episodic joke and may not be canon to the series.

His relatives are:

Peter Griffin (Twin Brother)

Lois Griffin (Sister-in-Law)

Chris Griffin (Nephew)

Meg Griffin (Niece)

Stewie Griffin (Nephew)

Bertram (Nephew)

Mickey McFinnigan (Father)

Thelma Griffin (Mother)

Francis Griffin (Step-Father)

Stewie Cruise (Son)

Quark Griffin (Son)