Guy Gardner is 63 years old (birthdate: January 6, 1948).
This answer is closed to changes. This is done in rare cases when questions are being vandalized or answers have become debates. E-mail reopen @ answers.com (no spaces) if you would like it to be reopened.
There are plenty of 'old guys' in Family Guy but the most notorious is Herbert AKA Herbert the Pervert. He is the old man that spies on Chris and is a known pedophile.