Cattus is a feline cactus alien that resided on Planet Gurunda prior to following BoBoiBoy's gang and joining TAPOPS. Cattus' first appearance is a cameo in "Planet Gurunda Exploration", with his formal debut coming in "The Cute Giant Cattus".
"Planet Gurunda Exploration"
At the end of the episode, a cactus patch in front of the camera moves across the screen. The cacti resemble Cattus' tail.
Cattus approaches the gang at their Gurunda campsite, eyeing BoBoiBoy's cup of water. Despite Gopal's protests to conserve water, BoBoiBoy offers his own drink to Cattus, causing the cat to warm up to him.
Being a feline, Cattus behaves much like a cat on Earth would act, albeit more aggressive. Cattus is shown to be very affectionate to people who help taking care of it, most notably BoBoiBoy and Papa Zola. In a short time, Cattus was able to bond with BoBoiBoy and grew angry when he had taken a hit for it. Cattus also has a strong bond with BellBot, who hangs around its neck.
When it wants something, it makes cute eyes to beg for it. When it's angry, the thorns on its tail will stand up. Other times, Cattus can be moody, picking and choosing it's fights and not always jumping in when it needs to.
After being long with Papa Zola, Cattus is shown to imitate his actions occasionally as shown in Episode 13.
Main article: Cattus/Relationships
- A natural ability that Cattus has is its ability to disguise itself as a cactus by burrowing underground, its tail acting as a cactus.
- Size Enlargement - Due to being the 'owner' and defender of BellBot, Cattus has the power to supersize itself to a monstrous size, usually when it's angry.
- Its name Cattus is a combination of "cat" and "cactus".
- Unlike most cats, Cattus only eats rattan wood as revealed in BoBoiBoy Leaf VS The Pirates.
- Cattus is a herbivore (as it eats rattan) and doesn't even know what a rat is.
- In Phantom Thief Panto, Koko Ci reveals Cattus' gender to be male.
- Cattus has a cushion plushie along with BoBoiBoy, Yaya, and Ochobot
- According to a video uploaded by Monsta, there are 6 moments of angry Cattus during the series.