A Trinity Mark is a type of colored symbol that can be activated ('unsealed') with the Trinity command in Kingdom Hearts and its Final Mix version. The marks look like a series of three tiny hearts connected by a circle. Trinity Marks, when activated, can cause items to drop, treasure chests to appear, or the party to interact with objects to unlock new areas or passages. The Trinity command is at first unavailable, as it requires a full party of Sora, Donald, and Goofy. Only after defeating Guard Armor and approaching any Trinity Mark do you gain access to the first Trinity Move; Trinity Jump. Later on you gain new Trinity Marks after defeating story-specific bosses. They are sometimes also mandatory to progress the story itself.
Trinity Marks are viewable in Jiminy's Journal under Trinity List, which lists the number of total Trinities, only noting how many have been found. Finding and activating all of them is not required to complete the game, nor to unlock the secret ending.
Trinity Jump is the first Trinity Move received upon approaching any Trinity Mark after the defeat of Guard Armor, typically either at the save point in the Accessory Shop or by approaching the world exit. Trinity Jump only works on blue Trinities and, when activated, causes the party to surround the mark and jump. This typically causes minor items or chests to fall down from above, and in once instances, transports the party to an area above them.
Trinity Charge is the second Move and acquired after sealing the Keyhole at Deep Jungle. It interacts with Red Trinities and when used causes the party to charge at a wall or object, either breaking through in case of the former, or shaking something loose in case of the latter. Trinity Charge is specifically required to progress the game twice, first in Traverse Town and later again in Hollow Bastion.
The third Trinity Move, Trinity Ladder, interacts with green Trinity Marks and is gained after completing Agrabah. As the name indicates, the part will climb on-top of each other to form a ladder and reach something above them. This either causes the party to gain access to a chest or other object, and in two instances also lowers a ladders, such as in a Cabin in Neverland to progress through the level. The other ladder is in Traverse Town's Accessory Shop, as mentioned by Goofy at the time, and grants access to the Item Workshop.
The fourth Trinity Move, Trinity Push, is entirely optional and only acquired after completing the Phil Cup, Pegasus Cup, and Hercules Cup in the Olympus Coliseum. It only works with yellow Trinities, and is also the rarest, with only four in the entire game. As the name indicates it causes the party to push an object, such as the massive block in the Coliseum's lobby (which reveals a Keyhole). It is generally akin to the Trinity Charge ability, wherein you gain access to a minor new area afterwards.
The fifth and final Trinity Move that the party learns learn is Trinity Detect; which only works on white Trinities. The party raises and holds their weapons together, summoning a treasure chest. It is learned after defeating Riku for the first time in Hollow Bastion and generally grants the most useful and best rewards, such as the Lady Luck Keyblade and the Violetta staff for Donald.
Note that Final Mix changed or swapped the contents of several chests, those from Trinity Marks included.
Blue Trinity Marks are the only ones that regularly award munny, MP and HP orbs, alongside other typical low value item drops. Due to this an ability like Treasure Magnet ensures you will be able to get all of the rewards more easily.
|Traverse Town||First District||In front of the café tables.||Transported to upper balcony with a Postcard in a chest.|
|In the corner next to the world exit.||120 munny|
|Third District||In the alley running behind the Lady and the Tramp fountain.||Camping Set and 60 munny|
|Magician's Study||On the floor near the main entrance.||Mega-Ether and 50 munny|
|Wonderland||Lotus Forest||In the alcove to the right where you can give a flower a potion.||Ether, Potion, Tent and MP orbs|
|Lotus Forest||After the trial, use the flower to grow to your normal size and push the new boulder into the water, which allows access to a hidden area.||Camping Set and MP balls|
|Olympus Coliseum||Coliseum Gates||Under the statue in the right corner.||Puppies no. 22, 23, 24|
|Under the statue in the left corner.||Mythril Shard|
|Deep Jungle||Camp||Near the table with the lab equipment.||Puppies no. 34, 35, 36|
|Climbing Trees||On the topmost ledge, near the Tree House entrance.||Puppies no. 31, 32, 33 (KH1) |
|Agrabah||Bazaar||In the center of the area.||Mega-Ether and 200 munny|
|Silent Chamber||In front of the steps.||Thunder-G|
|Monstro||Mouth||On top of the tower in the center of the area||Potion ×2, Cottage, and 50 munny|
|Chamber 5||In front of the lower passage from Chamber 6.||Cottage and 333 munny|
|Throat||In the center of the room.||Mythril Shard and 100 munny|
|Hollow Bastion||Dungeon||In the center of the room.||Mega-Ether, Mega-Potion, Cottage and HP orbs|
|Great Crest||At the landing point for the large lift platform.||Cottage ×2, Megalixir and MP orbs|
The Red Trinity in Halloween Town used to be missable in the original game, but in Final Mix this was fixed and it was moved to the Manor Ruins. Some of these are also found on the wall or object, rather than on the floor.
|Traverse Town||First District||At the end of the short alley behind the Item Shop.||Puppies no. 4, 5, 6 |
(Also access to Alleyway with High Jump).
|Alleyway||On the drainage grate on the end of the alley near the Dalmatians' house.||Access to Secret Waterway.|
|Second District||On top of the Gizmo Shop roof, on the wooden fence along the back wall.||Access to the big bell.|
|Agrabah||Treasure Room||In front of the stone statue on the left side.||Mythril Shard and 333 munny|
|Halloween Town||Oogie's Manor (KH)||In the first room after crossing the bridge, in the right corner.||Mythril Shard|
|Manor Ruins (FM)||On the stone arch on the ground (unable to be activated when Chimera will spawn).||Mythril Shard|
|Hollow Bastion||Entrance Hall||Second floor, in front of the tusked stone statue.||Emblem Piece|
|Traverse Town||Accessory Shop||In the center of the room.||Lowers ladder to Item Workshop.|
|Wonderland||Rabbit Hole||Behind the save point.||Elixir|
|Bizarre Room||In the fireplace.||Mythril Shard|
|Olympus Coliseum||Coliseum Gates||To the left of the main entrance in front of the purple banners.||Mythril|
|Deep Jungle||Treetop||Hidden in the center of the area.||Mythril Shard, HP orbs|
|Agrabah||Storage Room||In front of the shelf.||Power Up (KH1) |
AP Up (FM)
|Monstro||Mouth||On the roof of Geppetto's ship; requires High Jump.||Mythril Shard|
|Neverland||Cabin||In front of the door.||Access to Captain's Cabin.|
|Hollow Bastion||Library||Second floor, next to the desk.||Access to Azal vol. 3.|
|Traverse Town||Mystical House||At the back of the house, in front of the stack of crates.||Access to Power Up. (KH1) |
Access to AP Up. (FM)
|Olympus Coliseum||Lobby||Next to the stone Phil asks you to move.||Olympus Coliseum Keyhole.|
|Agrabah||Hall||In the center of the room, in front of the large stone carving.||Access to new Hidden Room section containing a gem that grants access to Thundara-G and Meteor-G.|
|Neverland||Hold||On the left-hand door on the upper level.||Access to Orichalcum, Power of wind, Puppies no. 85, 86, 87 (Both games) |
Dark Matter (FM)
|Traverse Town||Secret Waterway||In the middle of the larger section.||Orichalcum|
|Wonderland||Lotus Forest||In the closed off area that can be reached through the painting on the wall of the Bizarre Room.||Lady Luck|
|Olympus Coliseum||Coliseum Gates||In the very center of the area.||Violetta|
|Deep Jungle||Cavern of Hearts||In front of the Keyhole.||Orichalcum|
|Agrabah||Entrance||After entering the Cave of Wonders, in the corner on your left.||Comet-G (KH1) |
Ifrit Belt (FM)
|Monstro||Chamber 6||In the low-lying area behind the tallest "step".||Thundaga-G (KH1) |
Dark Matter (FM)
|Atlantica||Triton's Palace||On the path in the center of the spiral shell structure.||Orichalcum|
|Halloween Town||Moonlight Hill||To the left of the hill, near a broken segment of wall.||Comet-G (KH1) |
Puppies no. 67, 68, 69 (FM)
|Neverland||On Deck||On the poop deck of the ship.||Meteor-G (KH1) |
Puppies no. 43, 44, 45 (FM)
|Hollow Bastion||Rising Falls||Shallow pool where Riku takes the Keyblade.||Firaga-G (KH1) |