ドレスを着て悪趣味とのペンギンは、本当に本当に本当に本当に本当に本当に本当にいたずらペンギン。

Sensei Yang is Sensei's brother, but a more badder version. Sensei Yang lives at the Dojo, but is rarely seen. His appearance differs from Sensei, with a purple coat and grey-blue wings. He has a Yin and Yang symbol on his hat (Sensei being the Yin, Sensei Yang being the Yang) and makes his debut as a boss in Mission 12: The Dojo Case

Background
Sensei Yang and Sensei are not exactly "enemies" but consider both of themselves a balance required to run the Dojo. Sensei Yang and Sensei do practice Card-Jitsu, but the problem is is because Sensei is the Yin and Sensei Yang is the Yang, neither of them can beat each other. However, in Mission 12: The Dojo Case, the balance seems to be stronger in the Yang favor. Since Herbert Horror destroyed the Mousetron 2000, you sadly have to do yet another mission, as the mouse.

Involvement
Sensei Yang is the end of mission boss in Mission 12: The Dojo Case. To trigger this, you will need to go to the secret room in the Dojo. Sensei Yang will be there, and a Doom Weed will be in place. Sensei Yang wishes to engage in a fight, and the battle begins. All of Sensei Yang's attacks are elemental, and are the following;
 * Dragon Flame: Sensei Yang sends out a swirly fire beam. Touching the red core will deal damage; the orange aura has no effect.
 * Water Torrent: Sensei Yang sends out curly water spouts. Touching them will result in damage.
 * Twister: Sensei Yang creates a small twister. Coming into contact with this will throw you in the air, and take damage.
 * Hypno Nova: Sensei Yang sends out a spiral nova. Coming into contact with this will give you damage. It also destroys power-ups as well.
 * Mega Hurricane: A stronger version of the Twister. Sensei Yang creates a huge hurricane. Coming into contact with the Hurricane will send you in the air, and take damage.
 * Frost Beam: Sensei Yang sends out an icy beam. Touching this will take damage, and slow you down when you return to the field.
 * Torrent Frost: Sensei Yang sends out a very fast, frosty beam. Touching this will take damage, and slow down your movement when you return to the field.
 * Inferno: Sensei Yang creates a deadly fire blaze around him. Touching the inferno will take damage.
 * Dark Spiral: Sensei Yang sends out purple spirals across the field. Touching them will result in damage.
 * Mega Snowballs: Sensei Yang sends out 3 snowballs that tend to spark. Touching the actual snowball will result in damage, the sparks have no effect.
 * Esscence of Light: Sensei Yang sends out a small beam of light, that bounces off the walls of the field. It also gradually, gains speed. Touching the beam will result in damage.
 * Thunder Snow: Sensei Yang sends out a snowball made out of thunder. Touching it will result in damage.
 * Earth Lasers: Sensei Yang sends out 2 fast, green-ish lasers in any random direction. Touching them will result in damage.
 * Dragon Inferno: Sensei Yang sends out a fiery projectile that bounces off the field. Touching this will result in damage.
 * Frost Ball: Sensei Yang creates an icy blast, which is extremely fast. Touching the ice will result in damage.
 * Vortex Laser: Sensei Yang spawns a vortex around him, slowing your movement and then sends out any random element at you. Touching the element, or the vortex will result in damage.
 * Touch of Frost: Sensei Yang sends out a small frost beam at you. Touching the beam will result in damage.

Trivia

 * Rumors say Sensei Yang created the Doom Weed, but this has been proven false.
 * Sensei Yang also enjoys cooking.