Cute, yet deadly..

A kid who aspires to be a Ninja, but he or she has a long way to go and a lot to experience before he or she becomes into a real ninja. Of course, some of them can already be Ninja and kick ass.

Compare Kid Samurai and The Gunfighter Wannabe. Contrast Child Soldiers.

Anime

• Naruto started out as this.
  • Also, Konohamaru.
• Nintama Rantarou.
• The Narutaki Twins from Mahou Sensei Negima could be this trope.
• Black*Star from Soul Eater may qualify as this.
• Shinobu from Ninja Nonsense.
• Ninja Hattori-kun.

Comic Books

• The Teenage Mutant Ninja Turtles, anyone? Well, to be fair, Michelangelo seems to fit this trope better in the later incarnations..

Film

• All of the new students attending at Ninja Academy.
• Spritle in the film version of Speed Racer, but he doesn't pull it off very well.
• The three protagonists from the Three Ninjas film series.
• The Filipino film, Ninja Kids.

Live-Action TV

• Supah Ninjas

Video Games

• Yuffie from Final Fantasy VII.
• The ninja kids from the 3rd-gen and 4th-gen Pokémon games.
• Yomiko in Exit Fate, possibly.
• Jajamaru, from the Jajamaru-kun video game series.
• Izuna, from Izuna Legend of the Unemployed Ninja.
• Kid Niki, in Kid Niki, Radical Ninja.
• Kat and Ana from the Wario Ware series.
• Kay Faraday of Ace Attorney Investigations: Miles Edgeworth. As Edgeworth muses repeatedly, while she claims to be a Phantom Thief in training, she seems to actually want to be a ninja.
• Mini Ninjas - all of the playable characters are kids (preteens at the oldest)
• Hokutomaru from Garou: Mark Of The Wolves.

Web Comics

• In Marilith, Yulia's granddaughter Monika wants to be a ninja when she grows up.
• Robin's brother in The Wotch, due to being a Naruto fan.

Western Animation

• Garu and Tobe from Pucca.