Trinity

Trinity (トリニティ) is a special ability introduced in . The ability is represented by a symbol composed of three hearts connected by a circle.

Mechanics
In Kingdom Hearts, Sora can activate the "Trinity" ability while standing on a Trinity Mark while Donald and Goofy are in the party. This will cause the trio to perform an action respective to the mark's color, which usually results in opening a new path or revealing a rare treasure. The friends learn five different Trinity commands throughout their journey, each with a different color, as well as the combat ability "Trinity Limit". Certain Trinity Marks must be activated to progress through the story, but most are optional and only required for completing Jiminy's Journal. Almost all Trinity Marks can be activated at any point in the game, with the exclusion of a single Red Trinity Mark in Oogie's Manor in the original Kingdom Hearts. In that version of the game, the mark causes a small storage shed to disappear when activated, but the mark disappears once the manor is destroyed in the battle against Oogie Boogie. In Kingdom Hearts Final Mix, this Mark is moved under the arch below the manor, so that it is still accessible after the battle, but it will still cause the shed to disappear when activated.

Trinity Jump
Trinity Jump (トリニティジャンプ) is learned after defeating the Guard Armor in Traverse Town. It allows Sora, Donald, and Goofy to jump on the floor, shaking treasure loose from somewhere above them, or accessing higher levels.

Trinity Charge
Trinity Charge (トリニティスマッシュ) is learned after sealing the Keyhole in Deep Jungle. It allows Sora, Donald, and Goofy to charge at a wall or barrier and break it, revealing a new path.

Trinity Ladder
Trinity Ladder (トリニティスタワー) is learned after sealing the Keyhole in Agrabah. It allows Sora, Donald, and Goofy to climb on top of each other to reach something up high.

Trinity Push
Trinity Push (トリニティスショヴ) is learned after winning the Phil Cup, Pegasus Cup, and Hercules Cup. It allows Sora, Donald, and Goofy to push a heavy object.

Trinity Detect
Trinity Detect (トリニティスディテクト) is learned after defeating Riku at the Entrance Hall in Hollow Bastion It allows the trio to raise and point their weapons, summoning a treasure chest.

Kingdom Hearts Re:Chain of Memories
A Green Trinity symbol represents friend cards at the top left corner of the screen.

Kingdom Hearts II
A White Trinity symbol appears next to "Button" during Trinity Limit.

Kingdom Hearts III
Trinity appears as a Situation Command during the final battle against Master Xehanort. It allows Sora to regain conscious with the help of Donald and Goofy, and counter Xehanort's beam of darkness with a beam of light.

Notes and references
Marque Trio Trio-Symbole