The Teeny Weeny Ninjalino (also known as the Mini-Ninjazouave, Tiny Ninjalino, and the Splat Monster) is Night Ninja's spy, and he is the deuteragonist of the PJ Masks.
In "The Splat Monster", he transformed into the Splat Monster when he touched the transforming splat in the cave of Mystery Mountain. By the end of the episode, An Yu turned him back so it remains to be seen if he will transform again in the future.
Like the Ninjalinos, he is shown to be quite fast and agile. But he is hardly shown using other weapons such as "Sticky Splats" until "Armadylan Zen".
In his Splat Monster form, he has super strength and can also shoot red sticky splats, which he can telepathically control. Teeny Weeny can only access this form when he sneezes while holding the Mystery Mountain ritual scroll that leads to a cave containing transformation splat.
Unlike the other Ninjalinos, the Teeny Weeny Ninjalino will be shown to be less obedient with Night Ninja at certain circumstances and will sometimes side with the PJ Masks. It is also emphasized in "Catboy and the Teeny Weeny Ninjalino" that the Teeny Weeny Ninjalino is afraid, can get lost easily at places and is shown to not understand some phrases and sentences that people say.
However, since his appearance on Season 3, he starts to become more obedient and fully complies to Night Ninja's orders. As of that, he stopped siding with the PJ Masks for now.
The Teeny Weeny Ninjalino is identical to the Ninjalinos, except he is smaller in size, and very cute.
In his Splat Monster form, he's made of red sticky splats and has a muscular body, but the Teeny Weeny Ninjalino's face can still be seen. In this form, he is once more disobedient towards Night Ninja, and won't hesitate to attack him.