On Arrival.
I remember as a kid really loving the Bossk figure. I don’t actually recall noticing the Bossk character on-screen when I saw Empire Strikes Back in the theater. After all he has no spoken lines and probably enjoys only about 3.2 seconds of screen time. But no matter. For me a Star Wars action figure was a Star Wars action figure, and this one was particularly nice. The 4-LOM character came out shortly after I stopped collecting as a kid, so this p’ugly bounty hunter’s a new-comer for me. I love the irony of his human-fly head finished with a mouthpiece that looks to be straight out of a pesticide respirator. Too funny. And you say you’re looking for a naugahyde cloak? 4-LOM’s got it!
I still can’t believe that Kenner got the names wrong for 4-Lom and Zuckuss.
“There was originally some confusion as to which character is Zuckuss and which is his partner 4-LOM due to their names being switched on their Kenner action figures. Initially, the bug-eyed alien was named 4-LOM by Kenner, and the droid was named Zuckuss.”
~via http://starwars.wikia.com/wiki/Zuckuss