High Quality Content by WIKIPEDIA articles! Robert "Bobby" Singer is a fictional character in The CW Television Network`s drama/horror television series Supernatural portrayed by Jim Beaver. Chosen due to his working relationship with executive producer Robert Singer, Beaver made his initial appearance in the first season finale "Devil`s Trap". The actor believed the role would merely be a "one-shot deal", but has since become a recurring guest on the series, having appeared in more episodes than anyone besides the two leads. Despite also starring in the series Harper`s Island, Beaver was able to maintain his quota for Supernatural`s fourth season, with the role expanding even further for the fifth season`s apocalyptic storyline. The character, a "rough but warmhearted" working-class man who hunts supernatural creatures, has evolved over time into a father-figure for series protagonists Sam and Dean Winchester.