This page is about Sensei Jack as featured in Powerpuff Girls Ω. For other uses, see Sensei Jack.
Sensei Jack
Name Sensei Jack
Origin Samurai Jack
Sex Male
Age 40
Species Human
Status Alive
Eye Color Blue
Hair Color Black
Occupation(s) Teacher, Center Agent
Residence Megaville

Sensei Jack is one of the main characters in Powerpuff Girls Ω and a teacher at Megaville Junior High and Megaville High. He originates from the Cartoon Network, Samurai Jack. He debuts in chapter 4 of Powerpuff Girls Ω


Before Powerpuff Girls Ω

Jack was born as an unnamed Japanse Prince in 1589. When he was 10 years, an ancient evil was re-awaken, the Shadow Lord, known as Aku. Freed from his prison, Aku attacked the Imperial palace and took his father, the Emperor, captive. The Emperor had fought Aku 15 years before and was the man who trapped Aku in the first place. Having made plans for what to do if Aku ever should escape, his mother sent Jack on a travel around the world, to learn the greatest fighting skills and prepare him to defeat Aku when he would return. Jack returned to Japan after 20 years of training and in a battle with Aku, he almost killed Aku. The Shadow tricked him however, and opened a portal above Jack, sending the samurai to the future, to a place where Aku ruled. Jack, who had forgotten his real name, adopted the name Jack, after some teenagers in this future, called him so.

After 5 years of fighting against Aku, he did an incredible discovery however. The place, he thought to be Earth in the future, was in fact the Second Continent, of the Underworld. Making it across the Black Ocean, he appeared before Anubis, who after confirming that Jack in fact never died, sent him back to Earth. He was returned to Earth, resurfacing in the US in 2009, where he was discovered by the Center.

He became one of the Center's secret agents and after the Omega Event, he was stationed at Megaville Junior High and Megaville High. His vast knowledge of history and martial artist, made him the perfect candidate to be a history teacher and the coach of the Kendo team.

Powerpuff Girls Ω - Chapter 4

In 2015, after welcoming his new class, duty called and he was send out to take care of serial killer and regenerator Jason Voorhees. Jason, who was sent to Megaville Junior High by Mandark Astronomonov, already had killed a whole swat team when Jack set out to face him


Jack strongly exhibits the characteristics of a stoic hero. He is unfailingly kind and generous, and will always attempt to help those in need, as well as dispatching sage like wisdom to those he believes are in need of guidance. He often ended up sacrificing a chance to return to his own world in order to help someone else. He is also clever and rational, able to pose a plan or a strategy necessary to defeat the enemy, and also knowing his limits (such as when he is surrounded by too much enemies to defeat them by pure force).

Once he returned to Earth, he took on teaching, so he could share his wisdom and knowledge with children. He also wanted to share his experience with battling evil, which he did by agreeing to become an agent of the Center. When Jason attacked the school, Jack took it upon him to confront the monster and defeat it. He is confident of his own skill but not arrogant.


Jack's face is a square with a distinct eastern look, similar to Professor Utonium. Unlike in his own show, he wears blue sports pants with dark blue shoes. He wears a white shirt with a blue jacket. Jack also has long jet black hair that he ties into a tiny bun similarly to a number of his people who have been shown living in an area that greatly resembled the Edo period of Japan; however, the culture was more similar to the Nara and Heian periods.

Powers and abilities

Jack has several skills:

  • Indomitable Will: Jack's will can't be broken and is what keeps him going, even if he hits his lowest point.
  • Martial Artist: Jack has been trained in almost every form of martial art on Earth: African, Eastern and Western. This makes him very skilled fighter, even without weapons.
  • Multi-linguism: Jack is able to speak several languages, like English and Japanse and is able to translate dead languages like Latin or Hieroglyphs.
  • Strategist: Jack can come up with complex battle strategies in mid-combat.
  • Throwing: Jack is able to throw objects with a very high precision.
  • Weapon Master: Jack can handle every weapon, except firearms. He is however able to turn everything else into a weapon, if necessary.