You can look into members' profiles to know more about them here http://www.helloproj...ooonds/profile/, https://helloproject...iki/BEYOOOOONDS
However, let me start with the basics
BEYOOOOONDS consists of 3 subgroups: CHICA TETSU (4 members), Ame no Mori Kawa Umi (5 members), and a sub-group consisting of 3 new members. Let me briefly introduce the members:
Ichioka Reina (CHICA TETSU Leader): Her member color is Light Blue. Clues: She looks like K-pop idol. She's a potential performer, but the competition within BEYOOOOONDS seems to overwhelm her. In Megane no Otoko no ko MV, she's a student with a striped blue skirt, white shirt and among the TRIO (along with Yuhane and Shiori)
Shimakura Rika (CHICA TETSU subgroup) is considered ace by some people, I guess. Sometimes it's not clear whether she or Nishida Shiori is the second ace. Her member color is lavender. Clues: She has only one dimple when smiling, and has round face, big eyes. In Megane MV, she plays a student, wears black skirt and white shirt.
Nishida Shiori (CHICA TETSU subgroup), in my opinion, is the second ace of BEYOOOOONDS. Her member color is hot pink. Clues: She has two dimples on her cheek when smiling, looks like actress Fukuhara Haruka. In Megane no Otoko no ko MV, she wears striped yellow skirt, white shirt and among the TRIO
Eguchi Saya (CHICA TETSU subgroup): Her member color is Yellow. Clues: She's the second tallest member of BEYOOOOONDS, in Megane MV, she's a female student with glasses. In Go Waist MV, she's the main character who wears yellow shirt. She looks a bit like Kudo Yume of Juice=Juice.
Takase Kurumi (Ame no Mori Kawa umi Leader): Her member color is Mint Green. Clues: She's among the shortest girl in the group. In Megane MV, she wears clothes in hip-hop styles and is the rapper. She can be considered the leader of the whole BEYOOOONDS, since in every introductions, she seems to be the first one talking. In my opinion, she's considered a good actress, and dominates stage plays.
Maeda Kokoro (Ame no Mori Kawa Umi subgroup): Her member color is Sea Blue. Clues: She's the tallest girl with short hair. In Megane MV, she plays "male student" with glasses. You'll never miss her. She is good at Karate
Yamazaki Yuhane (Ame no Mori Kawa Umi subgroup) is the current ace of BEYOOOOONDS. Her member color is red. Clues: She has yaeba teeth, looks like Kamei Eri.
Okamura Minami (Ame no Mori Kawa Umi subgroup) is the personality-person for the group. Her member color is Light Pink. Clues: She has a baby face. In Megane no Otoko no ko MV, she also plays a student with black skirt and white shirt.
Kiyono Momohime (Ame no Mori Kawa Umi subgroup): Her member color is Orange. Clues: She knows how to beatbox. In Megane no Otoko no ko MV, she wears a kimono and introduces the story. She had lots of potential when even during her Kenshuusei period, despite being the youngest member.
Hirai Miyo (New member subgroup): Her member color is Dark Purple. Clues: She's a short-hair girl. In Nippon no DNA MV, she plays an announcer. You'll hear her first in that song. In my opinion, among 3 new members, she's the balance between singing and dancing.
Kobayashi Honoka (New Member subgroup): Her member color is Green. Clues: She plays piano. You'll see her play instruments in almost every songs. She's the third tallest member with bob-cut hair. Among 3 new members, she's good at singing.
Satoyoshi Utano (New Member subgroup): her member color is Dark Blue. Clues: She's the best dancer among 3 new members, and in my opinion, among BEYOOOONDS members. She looks like Oda Sakura, and her favorite senpai is also Oda Sakura.