Is there an english word for a person who appear in photos he/she is not supposed to be in?

In Norwegian we would call that person a "Linselus"- which translates into English "Lens lice/bug" Anyone? Thanks :) or:In Norwegian we would call tha

In Norwegian we would call that person a "Linselus"- which translates into English "Lens lice/bug"
Anyone? Thanks :)

or:In Norwegian we would call that person a \"Linselus\"- which translates into English \"Lens lice/bug\" Anyone? Thanks :)

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