Rhino Wrestler

I’ve been training day and night, in order to become the world’s strongest in order to prove I’m the strongest! The singular desire is enough to keep me burning…!!

Rhino Wrestler (サイレスラー, Sai Resurā) is a Mysterious Being belonging to the Monster Association who first appears during the attack in S-City.

Appearance
Rhino Wrestler is humanoid with various characteristics associated with a rhinoceros. He has a face which is that of a rhino and is heavily built, with many layers of thick skin and armor on his body. He wears a wrestling singlet and has an armband on each arm. On his abdomen is a large tattoo.

Personality
Rhino Wrestler is very prideful and eager to put his strength to the test. In addition, he desires to be praised by others. A testament to this can be seen when he asks Phoenix Man what he thinks of his disaster level.

Like most other prideful monsters, he doesn't care about compatibility with other heroes, with his only style of fighting being knocking down whoever comes in his way.

Unlike most of the other monsters, Rhino Wrestler actually trains to hone his fighting abilities.

Monster Raid Arc
Rhino Wrestler, Phoenix Man, and Sludge Jellyfish stop Mohican and Pineapple when the two heroes were trying to leave the city. Rhino Wrestler is left to the heroes by himself while the other monsters scout around. Rhino Wrestler is utterly bored by his opponents' pathetic attacks and decides to rate their attacks and scores all of them very lowly.

After his rant about the heroes' strength, Rhino Wrestler boasts about his training towards his opponents and expresses his utter disappointment in the heroes that he is facing. Phoenix Man alerts Rhino Wrestler that it is time to leave and to take the hostages. In addition, he reminds Rhino Wrestler that today is not the "main event", so they can't do as they please. Finally, Rhino Wrestler is told to only take the son of the Hero Association sponsor. Mohican and Pineapple make a final desperate attempt to stop Rhino Wrestler, but fail miserably as Rhino Wrestler is able to easily charge through them. Afterwards, Elder Centipede grabs Phoenix Man and Rhino Wrestler and leaves in the hole he created earlier.

Monster Association Arc
In the Monster Association, Maiko Plasma, Electric Catfish Man, and a few other monsters are discussing amongst themselves, while Wrestling Rhino is training. The other monsters are impressed by the victory Maiko Plasma and Electric Catfish Man had over Lightning Genji. The pair of monsters states that Gyoro Gyoro was the one who ordered them to fight Lightning Genji, and that as long as the monsters fight who Gyoro Gyoro tells them to fight, they won't lose. Rhino Wrestler interjects and states compatibility as "Such bullshit". He boasts that he will knock down whoever comes in his way, and completely destroys the punching bag he was using to train, reveling in the knowledge he will soon prove his strength. He was one of the second wave of monsters who attacked the heroes. Many of the B and C-class heroes attempted to eliminate him, but he brushes off their attacks with ease. Iaian then goes into battle and unsheathes his sword, but Rhino Wrestler is able to fight on par with him and even cause him to struggle. Then, Atomic Samurai notices his disciple struggling and swiftly eliminates Rhino Wrestler with his Atomic Slash, ending his life before even realizing what had happened.

Abilities and Powers
Rhino Wrestler is a very powerful monster, capable of overpowering A-Class, B-Class and C-Class heroes with ease and was able to fight on par with Iaian, who has the potential to reach S-class. However, he was completely dfenseless against Atomic Samurai, and was sliced by his Atomic Slash before he even realized what was happening.

Physical Abilities
Immense Durability: Rhino Wrestler is able to withstand Mohican's and Pineapple's attacks without sustaining any damage. Additionally, Rhino Wrestler was able to take the blows of Iaian without sustaining serious damage, despite Iaian being capable of cutting through beings such as Melzargard.

Enhanced Strength: Rhino Wrestler is able to knock out Mohican and Pineapple simultaneously in one move. Additionally, he was able to break apart a series of very large and durable tires chained together into a punching bag with ease.

Enhanced Speed: He was able to perform a series of incredibly fast punches while training on a punching bag, and later overwhelmed a large group of heroes with his rapid attacks. He could react to the bullets from One Shotter incredibly quickly and deflect each shot with his horn, and he could also react to Iaian's sword strikes and block them with his horn.

Fighting Style
Expert Hand-to-Hand Combatant: Rhino Wrestler prefers close quarters combat and believes the only effective method is to knock down any opponent that comes his way. He is skilled enough to accurately judge the techniques of others and rated the techniques of B-Class and C-Class heroes very low.

Trivia

 * The tatoo printed on his abdomen "砕" means to break or to smash. It is also a word pun with rhinoceros in japanese; both are pronounced "Sai".