The one-year-old was handed in to the Dogs Trust near Darlington in December after being found wandering the streets as a stray.
Following an appeal on social media, the canine with "a heart of gold" has found a new forever family.
The trust said Fester would be leaving the charity's kennels early next week.
Fester was born with a narrow jaw which causes his lower teeth to stick out - creating some "unique features", a trust spokeswoman said.
"We were concerned that fun-loving Fester may have ended up being over-looked by potential new owners due to his unusual eye-catching appearance," she added.
"He is a gorgeous boy with an amazing character, so we couldn't imagine why anyone wouldn't want to have him as part of their family.
"He's had a rough time and it is fantastic news he will have a new home where he can settle and hopefully his character will shine through."
Abandoned because of his bizarre looks, Fester the boxer dog, who is blind in one eye and has a protruding lower jaw, has finally been found a new home.