In the realm of science communication, realistic avatars have the potential to foster greater trust and engagement compared to cartoon-like ones. For instance, on the popular short video platform TikTok, numerous attention-grabbing “testimonial” videos feature well-known scientists such as Nikola Tesla and Marie Curie, who appear as virtual characters, delivering concise scientific messages that have drawn millions of viewers. Realistic avatars can effectively recreate the presence and charisma of historical scientists, helping viewers form a deeper connection with the scientific content. When these figures come to life in a lifelike manner, people are more likely to feel a sense of familiarity and trust, enhancing their belief in the information being presented. On the other hand, cartoon-style avatars, while charming and appealing, can come across as less professional when conveying serious scientific concepts, which might detract from the audience's trust. However, the use of realistic avatars is not without its drawbacks. One significant risk is the "uncanny valley" effect, where overly realistic virtual characters can create a feeling of unease in viewers. This occurs when the avatar appears almost human but has subtle, unsettling differences that make it seem unnatural. Another challenge is the high technical and resource demands required to create and maintain realistic avatars, which can be a barrier for smaller science communication organizations. Additionally, there is the potential for identity and authenticity issues, particularly if historical figures are misused or misrepresented. Despite these potential issues, science communicators can still harness the power of virtual avatars to make scientific content more engaging and credible. The key lies in finding the right balance. Avatars should be designed to be realistic enough to evoke a sense of presence and trust, while still maintaining the quality and accuracy of the scientific information they convey. Interactive elements and detailed background information can further enhance this balance, ensuring that viewers are not only entertained but also informed. Such an approach not only draws in a larger audience but also promotes the broader dissemination of scientific knowledge. For example, including interactive features where viewers can ask questions or engage in discussions can make the learning experience more dynamic and engaging. Additionally, providing in-depth context about the historical figures and the science they discuss can help viewers understand the significance and reliability of the content. By carefully integrating these elements, science communicators can create virtual avatars that are both believable and educational, thereby strengthening the connection between the audience and the science being communicated.