All light pink outlined with dark, these symbols play a role in the activation of the Power Suit. Four rectangular lights exist on the back, surrounding a middle circular one, and flash when the Power Suit is to be summoned. Next, a symbol on the back of Samus' left hand (the counterpart of the green orb on the back of her Power Suit) flashes while her arms cross her chest and she bows her head, before she looks up and unleashes a blast from a symbol on her left breast.
The symbol on the back of Samus' hand resembles a circle with two points protruding from the top and bottom, four rectangular lines circling it, and a zig-zag pattern on the circle. The breast sigil features a triangle pointing diagonally right down, with lines running below it, and another triangle pointing to the left.
- Curiously, Metroid Prime 3: Corruption and Metroid Prime Hunters do not feature any Chozo marks on the Zero Suit.
- The breast Chozo mark is present on the Metroid: Other M Art Folio pocket.
- Metroid: Other M 's Concept Gallery suggests that the Chozo marks on Samus' back will glow strongly during intense situations. Interestingly, while this effect is absent from gameplay, the cutscene in Sector Zero presents a shot of the symbol on Samus's hand glowing as she grabs a nearby surface to pull herself up. The cutscene occurs while Samus is struggling both physically and emotionally.