Rupert Alexander Lloyd Grint (born 24 August 1988) is an English actor and producer. He rose to prominence playing Ron Weasley, one of the three main characters in the Harry Potter film series. Grint was cast as Ron at the age of 11, having previously acted only in school plays and at his local theatre group. From 2001 to 2011, he starred in all eight Harry Potter films alongside Daniel Radcliffe playing as Harry Potter and Emma Watson playing as Hermione Granger.

Answer this question based on the passage: who is the actor that plays ron weasley? OK. Let's think. My stream of consciousness:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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The relevant information is: He rose to prominence playing Ron Weasley, one of the three main characters in the Harry Potter film series. The answer is Rupert Alexander Lloyd Grint.