She is known for her problem-solving skills. She makes her way through the forest slowly and thoughtfully. Always a step ahead of the game, she is ready to provide essential information that Dora and Boots need to complete their journeys.
Isa is a gardener and a nature lover. She loves to help her friends Dora and Boots, and they are always ready to help out with her flowers. Her garden is full of surprises, from talking exotic plants to her very own rocket ship. Once, when Isa wished for her sunflower to grow really big, she needed Dora's help to get back down.
Isa is quiet and can easily blend into the background, especially in forests and gardens like her own. Her color gives her a natural camouflaging ability. She is very good at playing hide and seek.
Isa loves all of her friends but especially likes to spend time with Boots, whom she has a crush on and knew long before she ever met Dora. Isa treats both Dora and Boots equally, but she always greets Boots more shyly than Dora. An early promotional image features Isa looking at Boots with hearts.
Isa is mostly green with many light green spikes along her back and tail. She has round white eyes on the top of her head, each with four long eyelashes. Like Tico, she has small triangular stumps for arms and legs. In the first season, she is forest green, and in all later seasons, she is a lighter lime green color.
Isa appears in most episodes of Dora the Explorer. She was first featured in the unaired pilot. Only half of the pilot has been released online, and Isa's scenes are not included; her name is only listed in the credits.
In the spin-off series Dora and Friends: Into the City!, Isa appears in two episodes: "Return to the Rainforest" and "Dora's Rainforest Reunion." She also makes a cameo appearance during the animated segment of the theatrical movie Dora and the Lost City of Gold.
- In the French dub, Isa is said to be a monitor lizard instead of an iguana. Her name is changed to "Véra le varan" (varan is French for a monitor).
- Not surprisingly, Isa has a bit of a crush on Boots.
- Isa appeared on the Dora and Friends: Into the City! episode "Return to the Rainforest".
- In the episode, she introduces Dora to a young flower who lives in her garden named Bud who had grown up hearing stories about Dora and her adventures from Isa and was excited to finally meet Dora. At the end of the episode, Bud ends up getting sewn into Backpack by Kate while she was repairing her, however, Bud is fine with it as he gets to go on adventures with Dora.
- Isa never makes an appearance in Go, Diego, Go!.
- In Season 1, Isa is dark green, but in later episodes, she's light green.
- She is able to blend into her surroundings, although she often wears dresses.
- She is sweet, thoughtful, and helpful.
- She grows a wide variety of flowers in her garden.