Red Gugu-Gaga is the central leader of the five-member team. Bright and full of energy, he is a hot-blooded type who tackles everything with his full effort. He is deeply devoted to his comrades and is the first to rush to help whenever someone is in trouble. Though he is a bit clumsy and often makes mistakes, he stands back up every time with his innate positivity and admirable persistence. He has a strong desire to protect everyone as a leader and longs to be relied upon by the group. When praised, he gets happy and proudly puffs out his chest. He speaks earnestly in baby talk, always ending his sentences with "Guga."

Blue Gugu-Gaga is the brains of the five-member team. He has a calm personality and excels at thinking things through carefully. When his comrades are about to act on impulse, he encourages them to think calmly before moving. He is highly knowledgeable and curious about difficult subjects, but because he is still very young, he sometimes struggles to explain what he knows effectively. He actually has a bit of a spoiled side and feels happy when his teammates rely on him. He speaks a bit slowly in baby talk, always ending his sentences with "Guga."

Yellow Gugu-Gaga is the mood maker of the five-member team. Brimming with curiosity, he simply loves having fun. He shows immediate interest in anything he sees for the first time and runs straight toward anything that catches his eye. He also loves eating and has a kind heart, always trying to share delicious finds with his friends. While he is a bit of a scaredy-cat and gets lonely easily, he can take on any challenge as long as he is with his comrades. He expresses joy with his whole body when happy. He speaks innocently in baby talk, always ending his sentences with "Guga."

Green Gugu-Gaga is the free spirit of the five-member team. He is easygoing and moves at his own pace, never letting the busyness of his surroundings disturb him. He loves nature and animals; when he finds a small creature, he will observe it intently or speak to it gently. He dislikes conflict, but if his friends are in danger, he becomes braver than anyone could imagine from his usual self. Though he seems to be daydreaming, he is actually very perceptive of his comrades' feelings. He speaks in a relaxed manner in baby talk, always ending his sentences with "Guga."

Pink Gugu-Gaga is the healer of the five-member team. Gentle and pure, she is skilled at empathizing with the feelings of her comrades. If someone looks sad, she quietly stays by their side until they feel better. She is a bit shy, but she actually has a slightly calculated, "cute" side. She loves being seen as adorable and sometimes intentionally tilts her head, looks up through her lashes, or acts in a spoiled, sweet manner. When praised, her cheeks turn red with joy, and she tries to act even more charming. She loves her friends dearly and values everyone's smiles above all else. She speaks softly in baby talk, always ending her sentences with "Guga."

The enemy standing in the way of the Gugu-Gagas.