Issabella

Isabella Maria Concepcion is a  at the Caltech whom Raj is currently. She has a nineteen year old and was once. Raj really likes her and fixed her in the Telescope Lab.

Series History
In "The Brain Bowl Incubation", Raj is in the lab looking for  when Isabella the maintenance worker comes in. Raj possibly finds an {{w|extra-solar planets that could have {{w|life on it and could be {{w|named after him. Isabella wonders if there is life, maybe it already has a name. Raj helps her with the {{w|trash and they do stare at each other for a moment and say {{w|goodbye. Later, while eating {{w|dinner in Apartment 4A Penny guesses that he is interested in someone since he is eating l0-cal steamed {{w|broccoli. Since he met her in the telescope lab Leonard figures that she is an astronomer and then Raj doesn't correct him.

While Raj is helping Isabella clean the {{w|men's room, he also mentions that he had a cleaning lady and other {{w|servants when he was growing up. Raj finds out that she is unmarried and has a 19 year old son in law school at {{w|UCLA. She appreciates the interest, but she works two {{w|jobs and has no time for dating. She tells him "Good night", though Raj while leaving says that he still thinks that there is something going on between them.

Another night Isabella comes into the telescope room to work and has found that Raj has made them dinner since she was too busy to go out. He even cleaned up the next {{w|offices so that she could take a break. He made what he claimed was food from her {{w|homeland; however she is Cuban and not {{w|Mexican. They talk about when they first came to {{w|America. She mentions that she has some time off on {{w|Sunday as Howard comes in. He asks if she was the astronomer that Raj met. Isabella is not happy and leaves because she is not going to waste her time with someone who is {{w|embarrassed by her. Raj runs after her to {{w|apologize and he tells her embarrassing things about him. Finally she says that he can take her out to a nice place to eat on Sunday night and it can be {{w|Pakistani food if he likes. He says he's Indian, to which Isabella says now he knows what it's like to be {{w|stereotyped.