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Some more info about Galidor... If you've seen RR Slugger's Galidor videos you may know about the unreleased Mokarr and Kek Nick sets, but there were a few more sets that made it past the prototype stage but never went into production.
The first one, pictured here, is a version of Euripides with a special suit of armor to allow him to survive on Earth. This set appears to be based on the episode of the TV show titled "Mr. Tager Goes to Earth", although the suit Euripides wears in that episode is far more discreet than the one shown here. Also of note is that the part used for the backpack actually contains a small amount of water, which as far as I'm aware is the only time a Lego piece has contained an enclosed liquid.