Unnamed Changelings
List of unnamed Changelings.

Earthbound Changelings 

Four Changelings were said to have infiltrated the population of Earth in 2372, with three known encounters occurring during this time.

Their presence was initially discovered in a review of security footage of the Antwerp Conference, where a Changeling appearing as a Grecian vase was spotted morphing moments before the bombing of the conference. There was no sign of a Changeling found in the aftermath, so Starfleet assumed that it escaped unharmed.

A second Changeling encounter happened on the grounds of Starfleet Headquarters when  was discovered by Odo to be posing as Vice Admiral Leyton. 

After Joseph Sisko refused a blood screening and was confronted by his son, Benjamin Sisko, the younger Sisko momentarily believed his own father of being a Changeling, and began to question his motivation after his father cut himself with a knife while cutting food and waited to see if it would revert. ()

A third Changeling encounter later occurred when Captain Benjamin Sisko was visited by  posing as Chief Miles O'Brien. 

The real Vice Admiral Leyton later used the presence of these Changelings on Earth as scapegoats for his ordered sabotage of Earth's global power grid and in faking the blood screening that revealed Sisko to be a Changeling. 

Later, when Odo wondered if he was the only one who was still worried that there were Changelings on Earth, Joseph Sisko admitted that, "I'm scared to death. But I'll be damned if I'm going to let them change the way I live my life." Benjamin then opined that, "If the Changelings want to destroy what we've built here, they'll have to do it themselves. We're not going to do it for them." ()

Evil Changeling

The Hundred

Infant 

A dying infant Changeling was acquired by Quark from a Yridian he had dealings with, and was in turn sold to the Human Odo in 2373. When Dr. Julian Bashir was able to save it, it was cared for and investigated by Odo, who saw it as an opportunity to reconnect with his people. 

He attempted to teach it to shape shift using basic encouragement, rather than the more painful electric jolts that had been used on him, but his initial attempts failed. When Dr. Mora Pol, who had raised Odo, arrived on the station, Odo was not pleased. He was still resentful of the invasive procedures that Mora had used on him. They immediately clashed over the raising of the infant, but, as Odo was making little progress with the infant, and Starfleet was threatening to take the infant, Odo accepted Mora's help. Both of them bonded as the Changeling began to take shape, realizing the advantages in the other's methods; it only began to shape-shift because of Mora's electric shock methods, but because Odo had made an effort to talk to it, it showed an interest in him, forming a face with eyes to peer at him.

However, it became sick again, and, despite the efforts of Doctor Bashir, it eventually died. However, as thanks for what Odo had tried to do for it, the Changeling merged into Odo, causing him to regain his shapeshifting abilities. ()

Changeling trio 
This trio of Changelings, consisting of two males and a female, were, alongside the Female Changeling, the first Changelings to meet Odo upon his return to the  in 2371. 

The Male Changeling initially thought that Odo was not ready to experience the Great Link. ()

Changeling on Torga IV 

This Changeling was aboard a Jem'Hadar attack ship which crashed on Torga IV in the Gamma Quadrant in 2373. The Changeling suffered severe physical trauma due to a failure of the inertial damper systems prior to the crash, which had killed the ship's Jem'Hadar and Vorta crew.

When the ship was discovered by a Starfleet crew led by Captain Benjamin Sisko that had been conducting a mineral survey on the planet, the Changeling disguised itself as a console inside the ship. When another Jem'Hadar unit, commanded by the Vorta Kilana, arrived to secure the Changeling's rescue, they were unwilling to fire weapons near or within the ship to avoid harming the Changeling. Kilana was also unwilling to tell Sisko the true nature of her mission out of the mistaken fear that the Starfleet crew might kill the Changeling or use it as a hostage.

After several hours of holding its shape, the Changeling succumbed to its injuries and died. Out of shame for having allowed one of their gods to die, the Jem'Hadar committed suicide. Unable to stop Sisko from taking the ship, Kilana requested, and was granted, permission to remove a portion of the Changeling's desiccated remains to take back to the Dominion. ()

Changeling on Karma Barge 

This Changeling was on the Karma Barge in 3190. The Changeling was cheating at the various games aboard the barge, and changing their appearance to hide their identity. ()

Alternate forms

de:Liste von Wechselbälgern
fr:Changeants
Changelings
Changelings