Gae-Na

Gae-Na was a member of the Dark Legion. She operated on board the Legion's Battle Cruiser in 3236 and provided advice to Lien-Da during her emotional crisis while Dimitri was dying. She also supervised a never-revealed experiment regarding a back-up plan in case the High Council of Echidnaopolis rejected the reunification plan proposed by Dimitri. She later accompanied Lien-Da to retrieve Dimitri after Knuckles sacrificed himself to save him.

Lien-Da Right-Hand Woman
Gae-Na served as Lien-Da's right hand woman and helped her in many situations such as helping on board the Dark Legion's Battle Cruiser and supervized an experiment crucial to a back-up plan against the High Council of Echindaopolis should Dimitri's efforts fail. (StH: #107, #108, #109, #115)

Later Assistance to Lien-Da
Gae-Na later gave advice to Lien-Da while Dimitri was dying and only Chaos Knuckles could save him, but she had promised her great-great-great-grandfather not to act against Knuckles and thought of how Kragok would be ashamed of her for pleading to the Guardian. After Mammoth Mogul caused a great explosion where Dimitri's robotic body was being kept, Gae-Na accompanied Lien-Da in the Hover Pod she was flying in while the rest of the legion followed. They discovered Dimitri unharmed, but Knuckles dead among the rubble. (StH: #117, #118)

Background Information

 * Gae-Na's current wherabouts are unknown, though it's possible she was killed in the Egg Grape Chambers.
 * The female echidna Lien-Da was speaking to in StH #117 appeared different than Gae-Na, lacking the cybernetic eye, and her name was never specified. However, writer Ian Flynn confirmed the two to be the same person. (1)
 * It has been rumored that Gae-Na was the younger sister to Gala-Na, or possibly another kind of relative. But it's just a rumor and the only thing being connected of the two is the last part of both their names. When Ian Flynn was asked if they were related on his message board, he overlooked the question, leaving it unanswered for the time being.