Yes, it's the Predator handshake meme. It seemed the only handshake in the world manly enough for Ivan and Ricardo. Maybe it's a traditional insectoid greeting. Or a test of strength. Or maybe they're just doing a bit of showing off of those unnecessarily flexed biceps. The world may never know.

Art by  deriaz featuring growlshift on Twitter's beetle boy, Ricardo. Battle of the accents here, generic Slavic vs generic Hispanic, who will win?