Siro is a lion-like Yo-kai who is a recolored version of Blazion where his color scheme is gray, white, and fainted teal or neon blue. It's mane is mostly white, while accentuating it with some teal color, to make it look like flames. Similar to Massiface, Siro has a small white scar on his forehead, to represent wounds from battles. It has neon blue swirls on its arms, and its skin color is a pale gray. Its eyes share the color scheme with the rest of it: its eyes are gray and neon blue. Siro is wearing a white top and dark gray pants with neon blue hems.
As his medallium bio says, he brings out the best of those he inspirts, becoming shining lights for the future.
Siro can rarely be found on the Mt. Wildwood Trail (left path from Mt. Wildwood Summit). He can also be freed from the Crank-a-kai using a Red Coin in the present. Another way to find Siro is in Gates of Whimsy.
When the holder is defeated, a fraction of their max HP is dealt to the Yo-kai who defeated them.
Yo-kai Watch 3
Yo-kai Watch Blasters
Yo-kai Watch Busters 2
Yo-kai Watch: Wibble Wobble
Boosts Attack with a roaring aura.
Effect: 43pt, Duration: 10s
Effect: 50pt, Duration: 10s
Effect: 57pt, Duration: 10s
Effect: 64pt, Duration: 10s
Effect: 71pt, Duration: 10s
Effect: 79pt, Duration: 10s
Effect: 86pt, Duration: 10s
Yo-kai Watch: Ukiukupedia
Level 30 →
Befriended:"My heart ROARS! ROAAARRRRRR! FOR FRIENDS!"
Receiving food (favourite):"You get it!"
Receiving food (normal):"Acceptable."
Receiving food (disliked): "Why'd I eat that?"
Freed from Crank-a-kai:
In the anime
Siro debuts in YW006. Nate summons Blazion to talk to Siro, but they soon both inspirit Nate, making him pick his nose eagerly. After Siro gives Nate his ark, Katie was revealed to have looking through her window and saw Nate the whole time. She immediately closed her window.
"Siro" is the word shiro (Japanese: 白,"white") spelled with the old Nihon-shiki romanization system.
"Todorokijishi" translates as "roaring lion".
Todorokijishi is the first lion Yo-kai who uses the Japanese word for "lion" in its name.
It is also the only one based on Blazion to do so.
Todorokijishi's name is written somewhat inconsistently in official media, either using all kanji, or the "Todoroki" part of this Yo-kai's name being written in hiragana.
Siro's "random" nicknames in Yo-kai Watch 2 are: Empawrer, Leo, Silvine, and Cotton.