Outsiders

The Outsiders, also known as Outlanders, are a pride of lionesses who feature in the film The Lion King II: Simba's Pride. They, along with their leader, Zira were followers of Scar before returning to Simba's Pride.

Background
Sometime after Simba had reclaimed the throne after the events of the first film, he exiled this pride of lionesses, due to their extreme loyalty to Scar. During their banishment, they resided in a wasteland known as the Outlands. Among their members included Zira, Scar's mate and her three children: Nuka, Vitani, and Kovu, as well as a substantial number of lionnesses. Altogether, their pride seems to be equal in number to Simba's pride. The name "Outsiders" most likely comes from the fact that they live in the Outlands, as well as the fact that they were exiled from Simba's pride.

As a whole, they are much more skinny than Simba's pride, and many of the lionesses are of darker coloration that Pride Land lionnesses. Interestingly, although Zira and her children are the only Outsiders with speaking roles, several individual members can be identified throughout the film by different markings on their bodies.

The Lion King II: Simba's Pride
Most of the Outsiders appear in background scenes, following Zira's orders. The pride first appears as Zira is bringing Kovu home. They are present as Zira lays out her plan to kill Simba by allowing Kovu to get close to Simba's daughter, Kiara. Later on, when it appears that Kovu is growing reluctant in his quest to kill Simba, the Outsiders ambush the two when Simba is alone with Kovu. They pursue Simba, but he manages to escape. In the aftermath, Nuka is killed after being crushed under fallen logs, and the pride is shown mourning his death. When Kovu escapes as well, the lionesses prepare to give chase, but they are stopped by Zira. Zira reveals her plans for a direct attack on Simba, which pleases the lionesses.

The Outsiders head towards the Pride Lands, traveling through a muddy river on the way. They are confronted by Simba and his pride, and a major battle breaks out between the two prides. Thanks to Zira's constant orders, the Outsiders gain the upper hand, and begin swarming Simba. However, they back off when Zira prepares to go one on one with Simba. Later, they are shocked when Kovu and Kiara interrupt the fight. Kiara's reasoning about stopping the fight seems to get the pride's attention. Seeing the truth of Kiara's words, Vitani defects from Zira. When Zira threatens to kill Vitani for her defection, the rest of the Outsiders is sickened enough that they defect as well. Zira attempts to attack Simba anyway, but is countered by Kiara. After Zira dies by falling into the river, the rest of the Outsiders are allowed to return to Pride Rock along with Simba. There, they watch as Kovu and Kiara are united in marriage. Presumably, the outsiders remained as part of Simba's pride.

Trivia

 * The existence of the Outsiders seems to contradict the events of the first film. During the first film's climax, all the lionesses were allied with Simba, and only the Hyenas sided with Scar.