Frank Smith

Frank Smith, Margaret's father, is a character who makes his first appearance in "Family BBQ". He is described as being very aggressive. He has a close relationship with Margaret and is afraid of possibly losing her to one of her boyfriends. He is the traffic reporter for the local news and flies in a helicopter called Chopper 6. He seems to be the only human in his family.

Appearance
Oddly enough, Frank Smith is a human unlike the rest of Margaret's family. He has a large build, grey hair that used to be light brown, and a mustache.

Personality
Frank Smith is known to be very mean and aggressive toward any guy that his daughter brings home refusing to give them hand shakes. However, he will give the guy the respect if they can do a better "Mannonball" better than he can.

Frank revealed to Mordecai that the reason he acts the way he acts because he was afraid that the other boys will take his daughter away from him. Fortunately, Mordecai managed to convinced Frank that his daughter will always love him and Frank's personality opens up revealing a much nicer guy. Just before crashing into the pool, he finally shakes Mordecai's hand which, the doctor claimed, saved both of their lives.

Mordecai
At the beginning of "Family BBQ", Frank shows his hatred to Mordecai. He often ignores the helpful things Mordecai does, especially that he only does it so Frank could like him. When he challenges Frank to a cannonball contest, Frank just wouldn't give up, and eventually would take things too far. At the end, Frank became friends with Mordecai after he admitted he was impressed that he would win a cannonball contest just for Margeret. Mordecai and Frank have remained friends ever since. In "The Thanksgiving Special", Frank took Mordecai and Rigby around in Chopper 6 in order to go to the competition and to get the turkey.

Trivia

 * It is confirmed by J.G Quintel that Frank is Margaret's biological father, as to him, all the characters are people.
 * However, it's unknown if it's actually true, because in his debt episode, one of the photos in his room showed a young robin with it's parents, presumably Margret and her parents when she was a kid. While it could also be her mother's parents or her aunt and uncle, there is half of a chance that Frank is actually her step-dad.