Just about every shonen action anime is filled to the brimg with exciting fights for fans to watch, from Luffy's showdown with Kaido in One Piece, to Naruto's legendary battle against Pain, and Ichigo Kurosaki's grudge match against Grimmjow Jeagerjaques in Bleach. When fans are caught up in all the action, their imagination will naturally take over and go wild, picturing new matchups between their favorites to see what would happen in all-new fights. This naturally extends to crossover fights between major series like the shonen big three.

In many ways, One Piece, Naruto, and Bleach are counterparts as shonen giants, and their characters are all roughly on par with one another as far as power levels go. It's easy to dream up crossover battles between the likes of Luffy, Naruto, Ichigo, and all their allies & villains. Most likely, the heroes of these series would actually get along quite well if they somehow ever met, but if they and their fellow cast members were destined to fight, it's hard not to pair certain characters against each other in battles that would surely make any anime fan shake with excitement.

10 Naruto Uzumaki vs Monkey D. Luffy is a Shonen Showdown Everyone Wants to See

The hypothetical battle between Naruto and Luffy is one of the anime fandom's most popular matchups, aside from Goku vs Saitama from Dragon Ball and One Punch Man respectively. Naruto Uzumaki and Monkey D. Luffy are both hugely popular characters and are quite similar as energetic, Goku-inspired shonen superstars. Both of them are colorful heroes with dazzling powers of all kinds, and they only grow stronger throughout the course of their series.

Naruto's best assets are his various jutsu and the sheer power of Kurama, which would help him stand up to Luffy's strongest techniques, those being Gear 4 and the more recently acquired Gear 5. If Naruto goes all-out with his biku cloak, then Luffy would need Gear 5's full strength with toon force to show Kurama that cartoon physics can stand up to a legendary monster. Naruto may have the edge on a good day, but Gear 5 Luffy is a force to be reckoned with.

9 Ichigo Kurosaki vs Naruto Uzumaki is a Battle of Half-Other Heroes

At a glance, Ichigo Kurosaki from Bleach is nothing like Naruto. Ichigo is a tsundere punk with a sword and black robes, contrasting sharply with Naruto's orange outfit and himbo-esque personality, but they do have one key similarity as shonen leads -- each of them embodies the half-other anime trope. Ichigo is a "jinchuriki" for his powerful inner Hollow, a bloodthirsty beast driven by instinct.

Ichigo may not have a Tailed Beast's power, but his inherited Hollow and Soul Reaper powers are formidable, and he is much faster than Naruto can handle. When Ichigo blends his Soul Reaper and Hollow powers with his bankai, he becomes nigh-unstoppable, though Naruto's full biju cloak could definitely stand up to it. Ichigo vs Naruto would be a showdown to see whether a sharp blade or a souped-up Rasengan is the stronger shonen weapon – and it could honestly go either way.

8 Monkey D. Luffy vs Ichigo Kurosaki Is a Contrast of Serious and Silly

Shonen fans want to see every combination of the big three's main characters fighting one another, so that only leaves the Luffy/Ichigo matchup. Ichigo Kurosaki has even less in common with Luffy than he does with Naruto, since Luffy has no half-other powers and is a loud goofball with big dreams that Ichigo can't relate to.

As for their own battle, Ichigo and Luffy would entertain viewers with their sheer contrast, since Luffy favors blunt attacks with his various Gears while Ichigo uses precise cutting attacks with his bankai. Sharp vs blunt is a classic contrast, and what's more, Ichigo's final forms make him more serious, while Luffy's transformation into Gear 5 makes him goofy, subversive, and incredibly powerful. The fight will come down to whether or not Ichigo's slices can cut through Luffy's rubber body.

7 Sosuke Aizen vs Madara Uchiha Would be a Showdown of Shonen Supervillains