Mr. Howard

Mr. Howard is a teacher at Ridgeway High School. He is the typical grouchy old man who hates children.

He first appeared in iGot Detention as the detention room monitor. It was stated that he likes to watch the Geometry Channel in the teachers' lounge.He apparently despises Principal Franklin, calling him "weak" and "spineless." Though married, he seems to be having an affair with Ms. Briggs (according to Sam).

In iHave My Principals, Mr. Howard and Ms. Briggs became co-principals after Principal Franklin was fired. It was stated in that episode that Mr. Howard's wife thinks he's a loser.

Mr. Howard seems to hate the iCarly trio, especially Freddie. He taunts him in iHave My Principals, and says that nobody cares what Freddie thinks in iTwins.

He last appeared in iParty with Victorious. In that episode, he wears glasses and looked a bit older. He also seems to have changed his ways of being nasty and is now presumably a responsible teacher, (e.g. asking Carly and Sam to read their text messages out as punishment).

Wife
Mrs. Howard

In two episodes where he plays a big role, his wife is mentioned. It's revealed that he has a bad marriage since he and his wife hate each other. And due to the fact that he has cheated / is cheating on his wife with Ms. Briggs.

Mr. Howard said that he hates laughter. Sam replied, "I thought you hated your wife!". Mr. Howard answered, "Her too!"
 * iGot Detention:

When Mr. Howard was just about to get fired from being co-principal of Ridgeway High School, he pleaded to Superintendant Gorman, "Please! My wife finally thinks I'm not a loser!". Gorman says, "Well, you are!".
 * iHave My Principals:

Things that Mr. Howard doesn't like
There are a lot of things that Mr. Howard does not like, but the most known are:

Laughter

Children; who hate him.

Mrs. Howard; who hates him.

Principal Franklin; In iGot Detention, Mr. Howard calls him a "weak and spineless fool" behind his back. In the episode iHave My Principals, when Mr. Franklin goes back to the school to get his last check, he seemed unfriendly towards Mr. Howard.

The icarly gang;mostly Freddie who he hates the most.

People who says he eats pants

Things that Mr. Howards like
The only thing Mr. Howard likes is the Geometry Channel.

Sam says he enjoys making out with Ms. Briggs in teachers lounge.

Stuff people find boring.