Seriously, these guys do my head in for obvious reasons. They're not easy to kill (even with the zapping racket thing or a swatter), and if you do get them.. you have to wipe off their guts, or worse.. maggots.. /vomits
My idea is that this is a respawning boss that roams all over the world map. You just randomly encounter it.. on the grasslands, when it latches onto your airship, on caves.. and when it 'touches' you (licks you with that long tongue), you get some nasty status ailment where you can't heal or be healed by your party because.. eww?
Excuse my lazy coloring