- ""Winner takes the staff, and leads the tribe! You know the rules, there are none. But in the Slither Pit, whatever I say goes.""
Mezmo is a Serpentine minifigure from the Ninjago theme. He is a Hypnobrai soldier. Mezmo appears several times in Season 2 of the Ninjago: Masters of Spinjitzu TV series. Mezmo is also the foot-soldier of the Hypnobrai army. He is exclusive to the set 9555 Mezmo. He has the typical Hypnobrai hooded snake head similar to Skales except for the fact his head can turn because of a lack of overhang off the shoulders.
Mezmo has Earth Blue legs with a gray pattern printed on them. His torso is also Earth Blue and has the same pattern, with two small yellow triangles on top. The arms are Light Grey and the hands are Dark Grey. Mezmo's head, which is shaped a cobra's, is similar to that of Spitta, but in Earth Blue and with different patterning. Two large fangs protrude from the head, which also sports red, swirly "hypnotic" eyes. Mezmo's primary weapon is Hypno Fang made from a gold Lightsaber Blade, two gold modified Lightsaber handles, two gold axe blades, and two fang pieces in White.
- Mezmo was wrongly labelled as appearing in 9444 Cole's Tread Assault in the January/February LEGO Club Magazine.
- He is the judge of the Hypnobrai Slither Pit.
- Mezmo seems to have some kind of high position when serving Garmadon on the Bounty, acting as a lieutenant during Ninja Ball Run.
- Ironically, he is the most common Serpentine in the show, but the least common in set form.
- In the TV show, in the episode Rise of the Snakes, Mezmo is known as "Hypnobrai Guard" in the credits and is voiced by Michael Adamwalte, who also voices Jay and the Mailman. In Home, he is known as "Snake Arbiter" in the credits and voiced by Ian James Corlett, who also voices Skales.
- The LEGO Club magazine January/February 2012 issue says that he is the Hypnobrai warrior, but he is really the soldier.
- "Mezmo" is similar to the word "mezmorized" which means "to hold attention to," thus, his hypnotizing powers.
- In various episodes, Mezmo appears to be "mezmorized" by food.
- Skales Jr's mother (and Skales' wife) Selma appears to be a Hypnobrai Soldier recolored pink.
- Ninjago: Masters of Spinjitzu
- Season 1
- Rise of the Snakes (cameo)
- Home (cameo)
- Snakebit (recap) (cameo)
- Never Trust a Snake (cameo)
- Can of Worms (cameo)
- The Snake King (cameo)
- Tick Tock (cameo)
- Once Bitten, Twice Shy (cameo)
- The Royal Blacksmiths (cameo)
- The Green Ninja (cameo)
- All of Nothing (cameo)
- The Rise of the Great Devourer (cameo)
- The Day of the Great Devourer (cameo)
- Season 2
- Season 1