Singapore airport didn't have the optimus.
did have steeljaw, galvatron, helicopter drift and another which doesn't come to mind right now.

also the spark battlers or whatever they're called and the 3 pack with deluxe strafe and two legends figures ( bb and stinger) I think.

also the series 2 movie kreon micro changers. I didn't look to close because they were expensive and I was ticked because I initially thought they were the wave 4 ones we didn't get here. they do not have a defining serial number on them.

Phillipines toy Kingdom had a lot of the series 2 kreo sets we missed here.


I also just noticed that the Hasbro toy shop has the Kreon SDCC set back up as a pre-order so if you know someone who can order on your behalf it might be worth a shot, otherwise Tropisetron has a set for sale still.