Cha Eun Woo’s Brother, Lee Dong Hwi, Gains Spotlight as AI Expert Developing Celebrity Protection Tool

Lee Dong Hwi, the younger brother of ASTRO member and actor Cha Eun Woo, has stepped into the public spotlight not for his resemblance to his famous sibling, but for his expertise in the tech world.

The researcher is garnering significant attention after appearing as an Artificial Intelligence (AI) specialist at the Korea AI Summit & Expo 2025 in Seoul.

AI System: From Personal Concern to Commercial Solution

Lee Dong Hwi, who works as a researcher at Unbound Lab Dev, a venture capital firm with a focus on AI solutions, delivered a lecture on November 10th at COEX in Seoul.

The title of his presentation immediately drew interest: “AI Made for My Brother Evolves into a Brand Verification Tool.”

• The Inspiration: In a pre-event interview, Lee explained that his proximity to the celebrity world, particularly his brother’s career, led him to focus on the unique challenges faced by public figures. He observed that celebrities, entertainment companies, and brands are constantly searching for ways to better communicate with fans and gain actionable feedback from massive data sets.

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• The Solution: The AI he planned and developed began as a personal project to solve these communication problems. It is an AI Data Crawling Model—a technology that automatically collects, extracts, and organizes unstructured data from websites and social media (including sentiment analysis and brand mentions), making it instantly usable by AI models.
• Current Application: The solution is now evolving into a brand verification engine and a system to protect celebrities. The AI is designed to help organize data feedback and, crucially, address the issue of malicious comments. Lee stated, “Celebrities inevitably endure a lot of pain from malicious comments… we are planning a system with our CEO to help protect those exposed in the public eye.”

Strong Academic and Professional Background

Lee Dong Hwi’s professional credentials underscore his status as a legitimate expert in his field:

• Education: He is a graduate of the prestigious Fudan University in China, where he majored in media and journalism/mass communication.
• Professional History: After graduating, he worked at a prominent domestic advertising agency, identified in media reports as Cheil Worldwide, before joining Unbound Lab. At Unbound Lab, he works on AIX projects and provides research and consulting services, exploring efficiencies in using foundation models to solve niche management problems across industries.

Public Attention Rises

While his work earned him a spot at the major AI summit, his connection to Cha Eun Woo significantly amplified the public interest.

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• Viral Cameo: Lee first caught the public’s eye in June when he made a brief, approximately five-second appearance on the tvN variety show ‘You Quiz on the Block.’ He was spotted walking with colleagues from the advertising agency where he previously worked. This short cameo went viral due to his sharp, clean-cut features, which strongly resemble his famous brother.
• Brother’s Praise: Cha Eun Woo himself has previously spoken about his younger brother, once describing him as “more talented and has a smaller face than I do,” further fueling the public’s fascination with the ‘genius-visual’ family.

Lee Dong Hwi’s public lecture has successfully repositioned him as a credible AI researcher applying his tech expertise to solve genuine problems in the highly exposed entertainment industry.