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Herbert Olsen is a character in the Disney Italian comic W.I.T.C.H. and Matt's grandfather. He acts as a father figure to Matt. He is very kind but seems to not be very organized. He owns a pet shop and he gave Will a part-time job at his shop. In "M is for Mercy", he was attacked by Shagon. In the television series of W.I.T.C.H., he was voiced by Val Bettin.