Beliskas

Black holes were placed all over the body.
On the head, only behind the right ear, on the back of the head, behind the left ear and on top.

Moves on 2 legs.
Smoothly, almost silently. Due to its "unnatural" nature, Beliskas seems to glide across the surface: footsteps are barely audible, and its silhouette can blur slightly for a split second—as if it were a subtle teleportation of a few centimeters.
With sharp jerks. In combat or when dodging, he makes swift, almost instantaneous sideways movements, making him seem to "disappear" and then instantly reappear in a new location. This is attributed to his ability to create micro-portals.
Jumps with spatial distortions. When Beliskas jumps, short swirls or dark spots may appear around its paws and tail, as if it were "breaking" through the air. In artwork and animations, this is depicted as a slight distortion of the background directly behind it.

It's simple: it's a cartoon character, and in animation a lot of things are not real.

In the world of "Colorful Cats" (content by Biscas), Beliscas speaks through the conventions of the genre—it's intended by the creator, and viewers simply accept it as part of the story. Cartoons and comics often feature characters without mouths who speak: their lines are shown in speech bubbles, or a voice actor dubs the character and the image is adjusted to match.

Yes, Beliscas can talk.

Explanation:
Beliscus is a character from the "Colorful Cats" universe (a fandom associated with the content of blogger Beliscus). In videos, clips, and fan materials, he is depicted as a fully-fledged character who interacts with other characters and delivers dialogue.

No mouth

Connection to the Anomaly. Beliskas is closely linked to an object called the "Anomaly" (the egg), through which he can influence events and even infiltrate the bodies of other characters.

What does he look like?
Colour: The coat is pure white, but dark anomalies are visible on it - areas similar to black holes (including a large black hole on the belly).
Eyes: dark grey with bright blue pupils, which gives the look a mystical effect.
Tail: white, black tip.
Features: sharp claws, slightly "distorted" contours, as if the space around him is slightly rippling - this is a visual reference to his ability to create portals and black holes.

Beliskas (aka "White Essence", "White Cat") is a character in the animated series "Colorful Cats".

His abilities
Teleportation and portal creation. Beliskas can open white vortex portals and travel instantly, and can even create multiple portals at once.
Black Hole Creation. He can transform an ordinary portal into a black hole, capable of destroying the body of any character.
Telekinesis and spatial manipulation. Able to levitate objects and creatures, freeze them in space, and manipulate spatial parameters.
Manipulation and psychological influence. Beliskas is a master of manipulation: he influences the decisions and behavior of other characters, driving them into a difficult emotional state, effectively acting as a puppeteer.
High intelligence and strategic thinking. Acts as a calculating antagonist, developing multi-step plans and using other heroes to achieve his goals.
Absolute immortality and omnipresence (presumably). The show's lore suggests that Beliskas is virtually invulnerable and can exist in multiple locations simultaneously through portals.
Immense physical strength. In his white entity form, he surpasses many other characters in strength—for example, he can rip an opponent apart.

His personality changes dramatically and he becomes one of the main antagonists:

A calculating manipulator, Beliskas skillfully manipulates other characters to achieve his own ends. For example, he manipulated Priskas and brainwashed him into moral collapse.
Selfish and ruthless, he's willing to do anything to regain his physical form, even to engineer an accident that would kill his former self. His kind heart has essentially frozen over.
A highly intelligent strategist, he devises complex, multi-move plans and exploits the weaknesses of other characters.
Cold and detached, he's indifferent to the suffering of others, seemingly "toying" with their fates for fun, displaying sadistic tendencies.