In crossovers with other shonen series, characters like Luffy from One Piece can be paired with Ichigo. Their different personalities and power sets would create interesting dynamics. Luffy's carefree nature contrasted with Ichigo's more brooding side could lead to some humorous and action - packed adventures.
Luffy from One Piece is also a common pairing. Luffy's carefree and adventurous nature combined with Ichigo's more serious and duty - bound personality would lead to some really fun and unpredictable interactions. They could be on a quest in a crossover world, with Luffy's devil fruit powers and Ichigo's Soul Reaper abilities working together in strange and amazing ways.
One popular character paired with Ichigo is Naruto. Their different power sets and personalities make for an interesting combination. Naruto's positive and determined attitude could contrast with Ichigo's sometimes brooding nature. Another is Luffy from 'One Piece'. Luffy's carefree and adventurous spirit next to Ichigo's more serious approach to protecting his friends can create some great stories.
Rukia is a very popular character to pair with Renji in crossover fanfiction. Their long - standing relationship in the original series makes it interesting to see how they interact in different crossover scenarios. Ichigo is also popular. Given their rival - like relationship in the main story, in a crossover, they could end up as allies against a new common enemy.
Ichigo could also be paired with Light Yagami from 'Death Note'. It would be an interesting clash of ideologies. Ichigo, who fights for justice in his own way, and Light, who has his own warped sense of justice. Their interactions could lead to some really thought - provoking storylines.
Sherlock Holmes is a popular choice. The contrast between the Doctor's time - traveling and otherworldly adventures and Sherlock's deductive reasoning on Earth - based mysteries can create some really engaging stories.
Sonic is a very popular character to pair with Shadow. Their rivalry and yet potential for teamwork makes for great fanfiction. Tails is also often paired with Shadow. Tails' intelligence can complement Shadow's combat skills. And Knuckles is another one. His strength and connection to the Chaos Emeralds can create interesting storylines when paired with Shadow.
The Road Runner could be an interesting character to pair with Rango. Their different styles of movement, with Rango being more of a swaggering walker and the Road Runner being super - fast, could create some really fun and comical interactions. Another great pairing would be with Shrek. The contrast between Shrek's ogre - like nature and Rango's lizard self would make for a great story of two misfits coming together.
Uryu Ishida is an obvious choice. As a Quincy, he has a complex relationship with Ichigo already. In a crossover, they could team up more closely and explore their similarities and differences in power.
One interesting character to crossover with Ichigo is Light Yagami from Death Note. The clash between Ichigo, who is a protector, and Light, who is a morally ambiguous character with the power to kill, would be very engaging. Saitama from One - Punch Man could also be a great choice. Saitama's overpowered nature and Ichigo's journey to become stronger would make for an interesting story. And what about Alucard from Hellsing? His vampire powers and Ichigo's powers related to the afterlife would create a really dark and exciting crossover.
Oliver Queen (Green Arrow) and Black Widow are often paired. Oliver's combat skills with his bow and arrow combined with Black Widow's martial arts and espionage skills make for an exciting duo. They could be on a mission where they need to infiltrate an enemy base and use their complementary skills to succeed.