Derek was my favorite Full House friend ever. He was sassy and he sang and he understood the importance of a good argyle sweater. He was the most talented 30-year-old-trapped-in-a-10-year-old's-body ever on TV.
We only knew the Katsopolis grandparent for a few episodes, but, in his short time on the show, he taught the kids to dance, won everyone over with his cooking, and, to his family's distress, secretly married off his eldest granddaughter. When he died, Michelle wasn't the only one who was heartbroken. He may not have made a big impact on the show's characters after that episode, but he'll forever stay in the memories of its fans.
Don't know who Kathy Santoni is? Oh, yes you do. She was Full House's cautionary tale, the girl the Tanner adults would mention every time they thought their own kids were getting in trouble. The poor girl went through puberty too fast, got bad grades in school, and, by senior year, managed to get herself knocked up. Not the greatest story, but still, the Tanner adults should have thought twice before using her as a "what not to do" example for the show's other characters.
No one got a worse rep on Full House than Kimmy Gibbler, except maybe for Kathy Santoni. The girl was made fun of for everything, from her grades to her outfits to her supposedly smelly feet. The Tanners always sighed whenever they saw her approach, and, several times throughout the series, she was just straight-up asked to leave the house. All of this might've been understandable if Kimmy was a horrible person, but the worst things that she did were bug Stephanie and comment on how weird it was that 10 people lived in the same house. She wasn't the enemy; she was just a lonely 15-year-old from a dysfunctional family, hoping to spend a few after-school hours in the safe, loving Tanner household. Oh, Kimmy. You deserved so, so much better from those mean old Tanner adults.
Mr. Bear went through so much, and yet no one gave him any credit. He was hidden by Michelle, dressed up by Steph, and torn up by Comet, and still, he stayed a background figure in the Tanner siblings' lives. Life just isn't fair for stuffed bear detectives.
I'm the first one to admit that Viper, a semi-regular character, doesn't really qualify for underrated. Yet no amount of screentime would've been enough for Viper, he of the leather jackets, cobra tattoo, and Hot Daddy and the Monkey Puppets fame. This guy deserved his own spin-off.
Kimmy always had questionable taste in men, but perhaps none of her love interests were as... interesting as Duane, her dull, Shakespeare-quoting boyfriend. Yet, while the Tanners may have deemed him "whatever," the guy will always have a place in my heart as one of Full House's most underrated characters.
Images: ABC (9); Giphy