Wataru Yokoo (横尾渉; Yokoo Wataru) is a current member of the Johnny & Associates Group Kis-My-Ft2. He is a former member of the group K.K.Kity. He is also the 'Y' in Kis-My-Ft2.
Name: Wataru Yokoo (横尾渉; Yokoo Wataru)
Nicknames: Yoko, Yaiba, Wataru, Wata, Wattan, Yokoo-san, Yokoo-chan
Birthdate: May 16, 1986 (Age 27)
Birthplace: Kanagawa, Japan
Height: 177 cm
Weight: 52 kg
School: Graduated from Yokohama Souei High School
Family: Parents, older brother, and his five dogs
Strong Point: Can react fast to different situations
Weak Point: Loses interest in things very quickly
Hobbies: Darts, pool, soccer, basketball
Admired Sempai: Tsuyoshi Domoto & Kazunari Ninomiya
Favorite Sports: Soccer, baseball, & basketball
Favorite Foods: Ushisa, yakitori, & fish
Favorite Items of Clothing: Tank tops & small accesories
Favorite Colors: White & black
Type of Girl He Likes: Fair skinned
Treasures the Most: Friends
Entered Johnny's: February 4, 2001
Image Color: Orange
- He is the second oldest member of the group but is considered by the other members to be an older brother in some ways.
- All of the Kisumai members respect him a lot; co-member Hiromitsu Kitayama has even called him Yokoo-san even though he is one year younger than him.
- Wataru is the type of person who wants to hear what he wants to hear; like praises.
- He entered the agency the same time Takashi Nikaido and Toshiya Miyata, and is thus considered a close friend of Takashi's.
- He considers places where he performs with the group as stressful.
- Yokoo doesn't look like he cares, but he really does care about the group and the other members a lot.
- He always stays calm and is a good listener.
- He believes Hiromitsu's pace for the group is good because it gives them a break from basically everything.
- He loves to dance but loves to watch others dance even more, so he goes to concerts every chance he gets.
- Wataru is always encouraging the other members in everything that they do.
- He once stated that fellow co-member, Kento Senga, would make a good leader of the group someday.
- He is known as a clean freak by the other members and they always joke about him acting like a "mother".
- Yokoo is called the mature one in the group and is the most reliable.
- He always brings everything in a bag, which makes the others go to him if they want to borrow something.
- Wataru is also known for his hot temper and being a bit sharp-tongued when the stituation calls for it.
 Freeter, Ie wo Kau