Trinity is a special ability present in Kingdom Hearts, and to some extent in Kingdom Hearts: Chain of Memories and Kingdom Hearts II. While traveling between worlds, Sora will occasionally come across a colored mark composed of three hearts connected by a circle, which causes the bottom command box to change to "Trinity".
Activating this command will allow Sora, Donald, and Goofy to perform an action matching the mark's color. By using Trinity Marks, the party can open new paths or obtain rare treasures. There are a total of five different Trinity colors Sora, Donald, and Goofy can learn throughout the game.
As they are the main party and closest friends, the Trinity command will only appear if Sora, Donald, and Goofy are the party members; if another character, such as Aladdin or Ariel is in the party instead, the command will not activate.
Trinity marks are required to complete Jiminy's Journal and progress the storyline. Finding and activating all of them is not required to complete the game, nor to unlock the bonus secret ending. In addition, all Trinities can be returned to if they are missed at any point in the game.
The first obtained in the game and by far the most common, this Trinity is learned after defeating the Guard Armor boss in Traverse Town. The blue marks represent the ability Trinity Jump; Sora, Donald, and Goofy bounce on the floor, shaking treasure loose from somewhere above them, or accessing higher levels. Although this is the first mark to be learned, activating blue Trinities are not required to complete the game.
Second to be discovered, after sealing the Keyhole at Deep Jungle, the red marks are for Trinity Charge. Sora, Donald, and Goofy will charge at a wall or barrier and break it, revealing a new path. Trinity Red is required at some points in the game to progress the story, especially in Traverse Town.
The third Trinity ability, green Trinity marks are activated after Agrabah is locked. They represent Trinity Ladder, where Sora, Donald, and Goofy climb on top of each other to reach something up high. The green Trinity is required at one point in Neverland; it must also be used to access the moogle shop above Cid's store in Traverse Town and activate Item Synthesis.
The fourth Trinity ability to be learned and the rarest of them with only a total of four in the game, yellow Trinity marks activate Trinity Push, allowing Sora, Donald, and Goofy push a heavy object around. In order to obtain this mark, Sora must win the Phil Cup, Pegasus Cup, and Hercules Cup in Olympus Coliseum; he promptly puts it to good use by using it to reveal the Coliseum's Keyhole.
The fifth and final ability that Sora, Donald, and Goofy learn is Trinity Detect; the trio raise and point their weapons, summoning a treasure chest. It is learned after Riku is defeated for the first time in Hollow Bastion. This trinity is not required to complete the game, but does net some useful things, especially the Lady Luck Keyblade and the Violetta staff for Donald.
The strongest Trinity ability is actually an attack, and consists of Sora creating an intricate Trinity mark on the ground and activating it with his Keyblade. It consumes all of the party's MP, but deals enough damage to wipe out any minor enemies within its area of effect, unless they are temporarily invulnerable, like the Shadow, Neoshadow, or Black Fungus.
|Traverse Town||First District||In front of the restaurant tables.||Transported to balcony with Postcard in chest.|
|First District||In the left corner near the world exit.||75-99 munny|
|Third District||In the alley running behind the Lady and the Tramp fountain.||99 munny and Camping Set|
|Magician's Study||On the floor near the main entrance.||? munny and Mega-Ether|
|Wonderland||Lotus Forest||In the alcove to the right where you can give the flower a potion.||Ether, Potion, Tent and MP balls.|
|Lotus Forest||After the boulder comes out of the flower, grow big and move the boulder into the water, shrink back down and then jump up the Lilly Pads into the hidden area.||Camping Set and MP balls.|
|Olympus Coliseum||Coliseum Gates||Under the right hand statue.||Dalmatians 22, 23, & 24|
|Coliseum Gates||Under the left-hand statue.||Mythril Shard|
|Deep Jungle||Camp||Near the Lab Equipment.||Dalmatians 34, 35 & 36|
|Climbing Trees||On the topmost ledge, near the Tree House entrance.||Dalmatians 31, 32 & 33 (KH1) |
|Agrabah||Bazaar||In the middle of the floor.||Mega-Ether and munny|
|Cave of Wonders||Silent Chamber, right in front of the steps.||Thunder-G|
|Monstro||Mouth||On the platform on top of the tall rock in the center of the Mouth.||Potion x 2, Cottage and munny|
|Chamber 5||On the ground right in front of the lower entrance from Chamber 6.||Cottage and munny|
|Throat||In the center of the floor of the room.||Mythril Shard and munny|
|Hollow Bastion||Dungeon||Center of the room.||Mega-Ether, Mega-Potion, Cottage and HP balls|
|Great Crest||Right-hand lower balcony, near the landing point for the large magic lift.||Cottage x 2, Megalixir and MP balls|
|Traverse Town||First District||At the end of the short alley behind the Item Shop.||Access to Alleyway and 99 Puppies chest.|
|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 in Second District, along the back wall.||Access to bell which reveals Keyhole.|
|Agrabah||Cave of Wonders||Treasure Room, in front of statue.||Mythril Shard and munny|
|Halloween Town||Oogie's Manor||In the first room after crossing the bridge. (In Kingdom Hearts, this trinity cannot be reached after Oogie's Manor is defeated.)
In Kingdom Hearts Final Mix, if Oogie's Manor is defeated before the trinity is obtained, it will be moved to a small arch on the ground.
|Hollow Bastion||Entrance Hall||Second floor, in front of the tusked stone statue.||Emblem Piece|
|Traverse Town||Accessory Shop||In the middle of the floor.||Lowers ladder to Synthesis Shop.|
|Wonderland||Rabbit Hole||Where Sora and the party enter at the beginning of the world.||Elixir|
|Bizarre Room||In the fireplace.||Mythril Shard|
|Olympus Coliseum||Coliseum Gates||To the left of the main entrance in front of the Tournament Rankings.||Mythril|
|Deep Jungle||Treetop||Right in the center of the area. Hard to see because of the foliage on the ground.||Mythril Shard, HP Balls|
|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 the middle of the floor.||Access to Captain's Cabin.|
|Hollow Bastion||Library||Second floor, same area as the table and save point.||Reach book on shelf.|
|Traverse Town||Mystical House||In the back of the house, on 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||Cave of Wonders||Hall, in front of pillar.||Access to new basement chamber containing Thundara-G and Meteor-G.|
|Neverland||Hold||On the left-hand door on the upper level.||Access to Orichalcum, Aero Element, Dalmatians 85, 86 & 87 and Dispel-G (KH1) |
|Traverse Town||Secret Waterway||In the middle of the passage, where the short tunnel connects with the main tunnel.||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||On the ground in the very center of the area.||Violetta|
|Deep Jungle||Cavern of Hearts||In front of the Keyhole.||Orichalcum|
|Agrabah||Cave: Entrance||Entrance, in front left-hand side.||Comet-G (KH1) |
Ifrit Belt (FM)
|Halloween Town||Moonlight Hill||To the left of the entrance, near a broken segment of wall.||Comet-G (KH1) |
Dalmatians 67, 68, 69 (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 floor in the center of the spiral shell structure.||Orichalcum|
|Neverland||On Deck||On the Poop deck of the ship.||Meteor-G (KH1) |
Dalmatians 43, 44, 45 (FM)
|Hollow Bastion||Rising Falls||Shallow pool where Riku takes the Keyblade.||Firaga-G (KH1) |