I've been playing Trigger for about 6 or 7 years now, played the game in its entirety about 250 times, and it amazes me I never noitced this until just now.
Whenever I've fought the 2nd form of Lavos (where you destroy the two arms), I've always seen him as being a cyclops, with the big center eye. After seeing a cover to the CTNP, featuring Lavos with some translucency, I JUST noticed that he actualyl has two more eyes beneath that. Wow, pathetic.