Ensa is a Smilodon. She was Susan's fourth creature.
Ensa's card, along with the Move Card Magma Blaster, winded up in North Carolina. Her card activated when the Card Capsule fell into a campfire. Ensa moved off, but later returned and tried to attack a couple. She battled Panther, and won. She then battled Arthro, and won. She then battled Gusano, and lost. She was later revealed to be a 17 on the Power Scale. Three episodes later, she battled a Repenomamus, and won easily. The next episode, she battled a Nuthetes, and won easily. The next episode, she battled an Eotyrannus, along with a Tapejara, and won. Evan's capture removed her from the team.
The second copy of the Magma Blaster Move Card was in her Card Capsule, and was activated along with her.
Ensa's name comes from another Smilodon from the series Dinosaur King: Adventure Revives.