Wonder-Yellow is one of the main characters in the Wii-U game, The Wonderful 101. He is a Wonderful One and member of the CENTINELS Planetary Secret Service. His real name is, Ivan Istochnikov. He's a Russian Army Soldier, and father outside of being a superhero.
A member of the Russian army and hero to its people, Wonder-Yellow is so strong that he has survived several trying missions through brute strength alone. As the “tank” of the team, he brings a tank-sized contribution to any mission, serving as the backbone that holds together the somewhat haphazard group of Wonderful Ones. Despite his large figure, he actually has an extremely gentle personality, frowning upon violence and fighting and seemingly impervious to any of Green’s insults. He is also shy to a fault, feeling awkward in public, and reticent to take action, but he makes up for these short-comings with his incredible scouting skills. His weapon, the Peta-Peta Hammer, is made of the heaviest metal in the galaxy, Peta Omorium. His Unite Hammer is strong enough to smash through even the sturdiest GEATH-Titanium.
In his civilian appearance, Ivan is a middle-aged Russian citizen who has a strong, well-built body. He also has black, piercing eyes, and brown hair that is hidden by a brown hat that he is currently wearing. Ivan's uniform is a sequence of a Russian army corps, with a bronze hue.
As Wonder Yellow, he has a yellow-colored CENTINELS suit with a black, large section, matching his boots. Likewise, Ivan wears his hat with a Wonderful 100 emblem, and coat, which are yellow, and dons a Wonder Mask on his face and a Shirogane Drive embedded on his torso.
Assigned as a Russian military soldier, Ivan acts as the muscles of the gang, yet has a soft and wimp-like personality. He is the oldest of the main seven, though he is not the blazing leader type, but he have a strong sense of protecting his fellow friends. The kindness that emanates from Yellow has a healing effect on those around him, making him the mental support the team relies on when the situation is grim. It also helps that Yellow’s muscle has saved the team in a pinch, time and time again. Likewise he is extremely shy, and has a tendency to blush and fumble his words.