The title is based upon a quote from William Shakespeare's play "Julius Caesar" (Act I, Scene II): "But, for my own part, it was Greek to me". (Spoken by Senator Casca.)
Scooby-Doo has discovered Atlantis on numerous occasions. In other cases he has been shown to live in the same universe as the Justice League, where Atlantis (where Aquaman is from) is already well-charted.
Lysander Demas resembles Indiana Jones (albeit with a Greek accent which Indy never had), and Susie Smythe resembles Lara Croft.