I think someone may have mixed up Timon's and Pumba's names... I have not seen any Timon's, only Pumba's
Or maybe it was assumed that because there was a Pumba that there would be a Timon?
I have opened a bit over 500 eggs and got all pins, animal hat and all eggs except atlantis and stitch.
Notice that Timon isn't listed in alphabetical order like the rest of them - he's where Pumbaa should be. My assumption is that Eros saw the picture, didn't click to see the actual name, and mistakenly called him Timon.