Lucky Emblems in Kingdom hearts 3 are "objects" that resemble Mickey Mouse's well known face&ears symbol. There are a total of 90 and are needed to unlock the Secret Ending, we need all the 90 Emblems in Beginner mode, 60 in Standard and 30 in Proud Mode in order to unlock it.

There are 12 Emblems in Olympus:

1- From Thebes save Point proceed South-East until you reach some stairs, you'll see the big Emblem there.


2- From Thebes/Overlook Save Point proceed up the stairs and you'll see the Emblem in front of you on the wall.


3- From Thebes/Overlook Save Point proceed down the stairs, use the Trinity Sled Command and at the end don't   jump on the Statue to the left, let yourself fall down instead and you'll find the Emblem on the wall to your right.



4- From Thebes Town go North-West until you see a small room on your left, turn right and you'll see a gold shield      and the Emblem



5- Starting from the road leading to Olympus, climb up the cliffside until you'll find 2 pillars, the emblem is on one        of them.


6- From the previous Emblem jump down and follow the road until you reach the Waterfall with no water, the 

    Emblem is there on the wall.


7- From the cavern with Zeus's Statueclimb up the walls and go North-East, follow the path until you reach the cliff,

    look down and you'll see the Emblem.


8- Midway on the road leading to Titan Boss, the large square where you fight lots of enemies, you'll find the

    Emblem on a tree to the left.


9- From Realm of the Gods/Corridor Save Point, go up the first flight of stairs, you'll see the Emblem on the side 

    the next set of stairs.


10- From the previous Emblem, use the railway to the left to reach the large room, defeat the enemies and you'll

      see the Emblem on the wall in front of you.


11- From the 9th Emblem spot club up the stairs and follow the water to the right, jump down and you'll find

      yourself in the Secluded Forge, the Emblem is on the side of the anvil.


12- From Realm of the Gods/Corridor Save Point go left, once on the Cloud Bridge look far South-East and you'll

      see the last Emblems in the distance.


For a detailed walkthrough check the video below: