Shira

At first seeming gruff and sarcastic, Shira was loyal to those that helped her: Gutt had once made her his first mate, a position which, despite Gutt's indifference at her loss, she initially held close. Shira was not easily swayed in her resolve and could often be quick to anger when she dealt with those that caused her trouble. Like many sabers, Shira is also shown to be very proud, shown when she refused the herd's help when she almost drowned, as she would rather die than be turned into a charity case. Her pride was shown again when she refused to accept the water Diego brought to her.

Despite her temper and her stubbornness, Shira did eventually fall in love with Diego, who showed her a better way of life than piracy. Life in the herd initially was something that Shira was uninterested in, due to her snide, sardonic persona, which deemed individuals like Diego, who turned down his rough-and-tumble life in a saber pack, as soft and weak. Her opinion changed quickly as she was accepted into Diego's collective herd as his mate. Near the end of the film, she is shown to be quite affectionate towards Diego, given they've become a couple. She is seen leaning on him when the herd sailed away to a new home, as well as nuzzling his side in the credits.

Due to the developed urge to start a family with Diego, Shira is shown to have a soft spot for children and eventually makes progress when an aardvark named Andrew and a start named Lily ask about their journey stopping the asteroid. Shira seemingly enjoyed teasing the kids, as she asked if they could handle a scary story and even exaggerated saying they encountered zombies.

Shira is shown to be a very athletic saber. When she was being chased by Diego on Switchback Cove, she ended up in a dead end. When Diego thought she was trapped, she revealed she had the ability to climb steep hills and rocky areas. Given Diego's impressed expression, this is possibly an ability that most sabers don't have.

As a saber-toothed tiger, Shira sported the same features that other sabers had: short, compact build with powerful running legs, clawed paws, short tail and ears, and a pair of fangs that were shorter than Diego's and not as sharp. Shira was grayish in hue, almost sliver, unlike other sabers, which tended to be dark tan or orange: Shira's pelt was striped somewhat with dark grey stripes and her eyes were vivid teal. Shira wore two earrings on her right ear, fashioned from an unknown substance. The smaller earring was blue, while the other one was green.