|“||Yes! Yes we needs them! We must have the sweetness!||„|
|~ Harold Buttowski|
Thought season 1 and early season 2 of the series, Harold was a caring and cheery but overprotective and worrywart. But in latter half of season 2 he become a cruel sociopath, mean-spirited, and self-centered arrogant despicable man because he has been flanderized badly.
Through appearing in several episode when he usually portray as goofy, caring, and cheery but overprotective and worrywart father, Harold has showing some his cruel and sociopath side as seen in episode "Brad's Room" when he lied to Kick where he's gonna restore his room after being destroyed by Brad on the fight. He intentionally change Kick's room into his own mancave for his new hangout with Magnus.
In the episode "Snow Problem", he punished Kick from something that he accidentally done and it was Harold's fault on the first place of why they're stuck on the cheap cabins yet he blames the whole thing to his own sons for that.
In "Bad Table Manners", he intentionally makes Brad injured by ping pong ball as he's trying to settle who gonna watch the whole brand new television that the family purchased.
In "Stay Cool", Harold is being a cheapskate as he bought a very cheap air conditioner and blaming Brad for the destruction of the air conditioner even he didn't do that. Which ended Brad up to be grounded for a whole summer. After it was revealed that Kick was admitting that he was the one who broke the air conditioner (along with Brianna even she didn't admit it). Kick was forced to blow up the manually blown bike fan to make him and Brad stay cool.
In "Locked Out", he installs a security system with a robot called Robobot, this robot tortures Kick and so many ruckus happens. As Harold appears, he busts kick, and send another robot called Groundedbot punches and torture kick and the episode finishes as he smile upon his sons torture.
In "Say Cheese", it was revealed that his main reason why he marries Honey is just because of her meatloaf not her or their loves.
In "Crumbs!", Harold destroys the whole Cul-De-Sac properties and scaring almost all the neighbors just for the sake of his wife cookies that he stole as his wife intended to have the cookies for the shuffleboard game. And he even dress as Kick's best friend, Gunther and his own wife just to stole the cookies.
- Harold has an obsessive love for his car, which makes him go crazy from time to time. In fact, he keeps "Monique" a secret from his wife.
- As shown in "Crumbs", Harold develop a split personality that causes him to attack anyone who tries to keep them away from him. Also he became similar to Gollum from The Lord of The Rings. He also mimicking Gollum's word like "My precious!" after he successfully stole the cookies from Kick.