http://en.wikipedia.org/wiki/Gorn<snip>
In the fictional Star Trek universe, the Gorn are intelligent reptilian humanoids from the Gorn Hegemony.
The Gorn had contact with the Orion Syndicate as early as 2154 (ENT: "Bound"). They made first contact with Starfleet at Cestus III in 2267 when a misunderstanding nearly led to war (TOS: "Arena"). Although the Gorn made territorial claims, the Federation had a settlement there in 2371, indicating tensions later softened (DS9: "Family Business").
Despite limitations in make-up technology which made
it obvious the Gorn Captain (Agave) in "Arena" was simply an actor (Bobby Clark was the actual actor in the suit) in a lizard suit (see picture), the Gorn has nonetheless become one of the most popular aliens to ever appear on Star Trek due to the striking design of Wah Chang and the Gorn's memorable personality: a hissing, slow-moving beast, the Gorn is nonetheless quite devious, chuckling wickedly to himself as he sets a trap for Kirk and promising that if the captain gives himself up, the Gorn will make his death "merciful and quick." "Arena" is also considered one of the series' classic episodes and was the template for a similar, critically acclaimed episode of Star Trek: The Next Generation entitled "Darmok".
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I didn't do it, nor was it even my idea, but its damn funny.