Nathaniel Castle is a pre-made future Sim living in Oasis Landing, from The Sims 3: Into the Future. He lives with his mother Susan, his daughter Lexi and the family Plumbot Vroombo. As implied in his biography, he is a troubled child turned novelist, although he lacks the writing skill. He can be made playable by marrying him, or asking him to move in.
Nathaniel is friends with all of his family members. Like all pre-made Sims from Oasis Landing, he has the Future Sim hidden trait. He has mastered his Advanced Technology skill and has 4 skill points in Laser Rhythm-a-con.