Silvermoon is a warrior of Crestclan. He's more quiet than the others but as he gets older, he gets more and more confident. He later asks Blakefeather to be his mate and the two love each other very much. After losing his mother, Silvermoon promised to himself he's always remember her and carry her faded memory with him always. 

If you want, feel free to audition to Silvermoon's younger self! I can't guarantee you get both, but go ahead and try! I'd prefer they have the same voice actor but it's not a requirement!