` Ken Katayanagi ‘

Ken is a Japanese boy with pale skin and short, black hair. His normal attire is a black tank top with red stripes, black pants and black boots… but let’s not forget we’re at a pool party! He is wearing pretty much the same.
He is wearing a white tank top with orange stripes, black swim trunks and sunglasses… nothing too exciting.

Ken is incredibly arrogant. He and his twin brother, Kyle, are also intended to be an homage to Jimmy Lee and Billy Lee from the Double Dragon series beat 'em up video games. However, like most of the second half of Ramona's evil exes, they seem to hold her in some level of respect and even seem to understand that she's a racer, and that abandoning people is simply her nature. However, this does not stop them from joining the League to get revenge on Ramona.

Along with Gideon and Kyle, Ken is possibly the most cunning and strategic member of the League. Instead of fighting Scott head-to-head, he and his brother use their robots to test his skills. They also take the time to learn about Scott, including his past relationship with Kim, whom the twins identify as the "constant" in Scott's life. This leads them to specifically target her to draw out Scott to expose himself to them in a vulnerable way to gain the upper hand. Additionally, they are able to deduce that Scott's relationship with Ramona is on shaky ground and use this knowledge to demoralize him during their final fight.

It is known that Ramona used to date both twins at the same time without them knowing, cheating on both of them at the same time. There doesn't seem to be any hostility between the two considering their previous relationship with Ramona, apparently they only blame her for everything that happened. Scott ends up having to fight the twins four times.