These are two similar roles tied in one. Frikka is a young girl who is saved by Guts while en route to be sacrificed to a monster. She is wide-eyed, in awe and fear of the brutal world around her. Young Griffith represents the internal struggle of the man who will become the main villain of Berserk. He starts out terrified by the actions he takes to achieve his dream, but slowly comes to realize that he cannot allow the fear of "necessary sacrifices" to keep him from achieving his goals.

For Young Griffith's voice, I'm looking for something similar to Veronica Taylor's performance from the English dub of Berserk 1997, or Barbara Goodson's, from the English dub of the third Golden Age Arc film: The Advent.