Nala

Nala is Simba's best friend and, as of the end of The Lion King, his mate. Nala is a kind, understanding soul who only ever wants to do the right thing. When she tries to convince Simba to return to the Pride Lands and take his place as king, she ends up arguing with him. In the end, however she joins the fight against Scar, alongside Simba, Timon and Pumbaa, after Simba decides to return.

In The Lion King II: Simba's Pride, Nala has a less prominent role and acts as a voice of reason to Simba, again urging him to do the right thing. She says she thinks that Simba tries too hard to walk the path expected of him by Mufasa. Adult Nala is voiced by Moira Kelly, with Sally Dworsky providing her singing voice in the "Can You Feel The Love Tonight" sequence. As a cub, Nala is voiced by Niketa Calame, with Laura Williams providing her singing voice in "I Just Can't Wait To Be King".

History with Simba
As cubs, Nala and Simba were nearly inseperable. They were the best of friends and shared a dislike for Mufasa's hornbill majordomo Zazu, which was probably worsened when he mentioned that they were betrothed to one another (an idea which they both found completely wrong). Whenever the two of them wrestled as cubs, Nala would always end up pinning Simba to the ground.

When told by Scar that Simba had died alongside Mufasa in the stampede, Nala was heartbroken. She was overjoyed when she was unexpectedly reunited with him years later when they were both adults and the two of them began to fall in love. It was at that point that Simba finally pins Nala to the ground (and at which point Nala gives Simba a "kiss" of sorts for doing so).