Catherine Chu, a developer in a children's hospital, explores the challenges of designing avatars for VR simulations used in medical treatment. She emphasizes the need to carefully consider avatar design because children's emotional responses in VR are heightened. The choice between human, animal, or cartoon characters can significantly impact their comfort and engagement levels. Kids often find overly realistic or exaggerated characters unsettling, as they struggle to differentiate between fantasy and reality. Research indicates that avatars with moderate social realism—neither too real nor too cartoonish—are more effective. Kids expressed a strong preference for avatars that maintain consistency in style and movement. For example, a cartoon fox should not have realistic eye movements, as this creates a mismatch that can be off-putting. Eye behavior is a critical aspect of realism; children are particularly sensitive to how avatars blink or make eye contact. They also desire physical interaction with avatars, which can lead to disappointment when the experience feels "fake." To address this, designers should utilize distance design principles, ensuring avatars are positioned slightly farther away to enhance the sense of realism without overwhelming the child. Research into proxemics theory shows that people maintain specific personal space zones based on their social context. In VR, children may keep even larger distances than in real life, likely due to differences in distance perception. This insight suggests that avatars should be placed at a safe distance, allowing children the choice to engage more closely if they wish. The nuances of designing for children in VR underscore the importance of balancing visual appeal with emotional comfort, ensuring a positive experience during medical procedures.