Howard Wolowitz is faculty at Caltech's Department of Applied Physics who often hangs out at Leonard and Sheldon's apartment. He designed a satellite that is currently orbiting a moon of Jupiter taking high-res photos and some of the components he has built are on the ISS. He doesn't show signs of discontentment like Leonard, but rather is confident enough to try to woo Penny with his knowledge of languages, of which he knows six. Most of the languages were revealed in only the matter of one episode; in revealed order, they are English, French, Mandarin, Russian, Arabic, and Farsi. Hitting on Penny in different tongues has become a regular occurrence; one which angers Leonard greatly. Wolowitz also knows Klingon because as Sheldon stated, they all played Klingon Boggle together.
Trivia
Howard wears alien pins on his collar in every episode
Howard wears vans
other people tell Leonard, Sheldon and Rajesh,Wolowitz is the "...your annoying little friend who thinks he speaks Mandarin." He also apparently mispronounces his Russian.
Wolowitz spends a large amount of time playing World of Warcraft, where he plays a night elf hunter with a pet tiger named Buttons. And Age of Conan where he is a Guardian named Sir howard of Wolowitz.
Howard enjoys (and is very decent at) DDR(dance dance revolution).
Howard is allergic to peanuts and when he does eat one, his face goes pink and swells up badly, making him look like a Chinese man .
Howard owns an Alienware computer.
Howard can beatbox, badly.
Howard's mother, played by Carol Ann Susi, threatens to take Howard out of the will if he continues to see "the whore of Omaha," Penny's friend Christy.
Howard lives with his mother, though he maintains that his mother lives with him.
Howard gets around Pasadena by means of gas-powered scooter with a basket on the front.
Howard thinks that when Penny rejects him that she is actually flirting with him.
Howard plays the drums on Rock Band.
Howard lost his virginity in a Toyota Corolla to his cousin by accident. (:
Howard says in The Friendship Algorithm that he's thinking to grow mustache but it's not until The Electric Can Opener Fluctuation he appears with mustache.
Phrases Howard has used to hit on women:
"See a Penny, pick her up, and all the day you'll have good luck."
(Howard was dressed as Robin Hood on Halloween but everyone thought he was Peter Pan:) "I got a lot of fairy dust with your name on it."
(Trying to hit on Summer Glau, an actress in Firefly as well as The Sarah Connor Chronicles. Raj later stole this line to use himself) "It's hot in here; it must be Summer."
"Are you from Mars? Because your ass is out of this world."
"Your ass must be jelly, because jam doesn't shake like that."
He has also called Penny a "cheesecake-scented goddess."
