William Jakrapatr

William Jakrapatr Kaewpanpong is a Thai pop singer and actor, best known as the main vocalist of the boy band LYKN under Riser Music. Born on Valentine's Day 2005 in Hat Yai, he won the GMMTV survival show Project Alpha in 2022 and debuted with LYKN in 2023. With over 2.5 million Instagram followers, he shares a mix of travel, performances, and behind-the-scenes content. William also acts, starring in the series ThamePo: Heart That Skips a Beat and the upcoming You Maniac. His musical theatre training at Mahidol University shapes his emotive stage presence, and he has partnered with brands like L'Oreal and Vivo. Fans appreciate his down-to-earth charm and powerful vocals. [edit]

William grew up in Hat Yai, southern Thailand, speaking with a Southern Thai dialect. He struggled with academics and instead threw himself into extracurriculars, earning a black belt in Taekwondo. He picked up guitar and piano, and by age 13 or 14 he started singing. At 17 he began dancing. Before his professional debut, he was the vocalist and guitarist in a band called Broccoli. He enrolled in Mahidol University's Young Artists Music Program and later its College of Music, majoring in Musical Theatre. His big break came when he auditioned for GMMTV's Project Alpha in 2022. He won the competition and was crowned King of Alpha, setting the stage for his debut. [edit]

In May 2023, William debuted as main vocalist of LYKN with the single May I?. That same year he made his acting debut in the short film No Worries. In January 2024 he released his first solo single Last Twilight. From late 2024 into 2025 he played the lead role of Thame in the series ThamePo: Heart That Skips a Beat, which boosted his profile significantly. In 2025 he appeared as guest star Rome in Me and Thee. He is set to play Dean in the 2026 series You Maniac. Alongside music and acting, William has endorsement deals with L'Oreal and Vivo and continues to perform with LYKN, building a growing fanbase across Thailand and internationally. [edit]

William is known for his powerful and emotive singing voice, a product of his musical theatre training. His public image blends idol polish with approachable warmth, often sharing candid moments from rehearsals, travels, and daily life. On Instagram he posts performance clips, brand collaborations, and personal snapshots, maintaining a professional yet friendly tone. Fans frequently pair him with actor Est Supha under the couple name WilliamEst, celebrating their on-screen chemistry in ThamePo. His content resonates with a young Thai and international audience, and his brand partnerships with L'Oreal and Vivo reflect his rising commercial appeal. [edit]

The heart of William Jakrapatr's cultural footprint beats strongest through the collective energy of his supporters, known as Westies. This fanbase has evolved from a group of individual admirers into a highly organized force capable of driving international expansion for his boy band, LYKN. Their influence is evident in the successful mobilization of crowds for concerts in India and Manila, where fans traveled across borders to witness the group's "Unleashed" tour. A defining narrative within this community is the "WilliamEst" pairing, a ship celebrating the chemistry between William and Est Supha that has spawned sold-out joint fan meetings and coordinated traditional outfits like barongs. The fandom also embraces the group's "werewolf" motif, turning it into a shared identity marker that permeates their social media interactions and branding rituals. While the Westies demonstrate remarkable global reach and organizational skill, iFANN's Global Fame Engine has evaluated William Jakrapatr but currently does not place him in any published ranking scope. He holds no placement in the Global Top 1,000 or any Top-100 scope list at this time. Despite the absence of a formal rank, his status as a leading figure in Thai pop remains undeniable, driven by his dual career in music and acting and the passionate support of a fanbase that treats every milestone as a collective victory.[edit]

Before stepping onto the stage, William harbored a childhood dream of becoming an astronaut, a far cry from the idol he is today. His artistic journey began later than some peers; he started singing around age 13 or 14 but did not take up dancing until he was 17. A native of Hat Yai, he retains a distinct Southern Thai dialect in his speech and holds a black belt in Taekwondo alongside skills on both piano and guitar. During his time on Project Alpha, he secured the number one spot, setting the stage for his debut with LYKN. One of his most viral moments occurred during a collaboration with Discover Hong Kong, which garnered over 9 million views on Instagram. Beyond these personal details, William's legacy is woven with iconic moments like the massive success of the "WilliamEst" pairing, which became so influential it drove commercial events like the "Lovestruck" Fanmeeting in Manila. Fans also revere his pivotal role in the historic first-ever LYKN concert in India, a breakthrough event that marked the group's entry into new markets. The group's adoption of the "werewolf" theme has become a foundational piece of lore, creating a unique ritualistic bond between the members and the Westies that defines their public identity.[edit]

William was born to Barame Kaewpanpong (Eak) and Duangporn Kaewpanpong (Anny, née Srisuwan). His mother is of quarter-American ancestry. He has an older maternal half-brother. The family lived in Hat Yai, Songkhla Province. William has not publicly shared details of his current household. [edit]

William is often associated with his LYKN bandmates and his on-screen partner Est Supha Sangaworawong, with whom he starred in ThamePo: Heart That Skips a Beat. As a Thai pop idol, he is sometimes compared to members of other Asian boy bands like BTS's Jungkook and J-Hope. [edit]

William is publicly paired with actor and swimmer Est Supha Sangaworawong, his co-star in ThamePo: Heart That Skips a Beat. Fans ship them under the couple name WilliamEst, and their on-screen chemistry has led to widespread speculation about a real-life relationship. However, neither party has confirmed a private romantic connection. As of 2026, William is not publicly known to be in a relationship, focusing on his career and studies. [edit]

Per iFANN's editorial analysis, William Jakrapatr's net worth is estimated at $1 Million as of 2026. This financial profile reflects a rapidly growing portfolio derived from diverse revenue streams including LYKN group activities such as music releases and concerts under Riser Music and GMMTV. His income is further bolstered by acting roles in series and short films, lucrative brand endorsement deals with major partners like L'Oreal and Vivo, and significant social media monetization on Instagram. Given his relatively recent debut in 2023 and his ongoing academic pursuits, his financial standing continues to expand. No verified real estate holdings or major external investments have been reported at this time.[edit]