A recent New York Times article revealed an important Colby Doppelganger from the world of Art History, and specifically the world of Pablo Picasso. This is a painting Picasso did of close friend and sculptor, Mateu d Soto and the resemblance is uncanny. I just wish my mustache would grow like this.
And if there were a word for spiritual likeness in the sense that doppelgangers are two people with visible likeness, then it looks like Mateu and his brother might have also had my own penchant for sexual exhibitionism. Below is a photo of the brothers with "Anita" demonstrating a keen interest in matters of the bedroom, and potentially matters of gender-bending according to this Telegraph article.
And here is Mateu with an un-named Saint-Lazare Prostitute, confirming his healthy relationship with members of the sex industry.