Most people will recognize him from his role in The Flash (2014). He portrayed the young Barry Allen and was seen in eight episodes. John Wesley Shipp was part of the series of the same name from 1990, and in the 2014 series, he portrayed Barry Allen's father, Henry Allen. He remembered Williams on twitter; "He was 100% committed to playing young Barry Allen, and we missed him once we moved past that part of the story."
Heartsick to learn of Logan Williams’ death at 16. He was 100% committed to playing young Barry Allen, and we missed him once we moved past that part of the story. Love and compassion to Logan’s family and friends in your grief. pic.twitter.com/lOlUyxJtIC
— John Wesley Shipp (@JohnWesleyShipp) April 3, 2020
Grant Gustin, who portrays adult Barry Allen in the 2014 series, posted a picture in remembrance to Williams. He also praised the young actor; "I was so impressed by not only Logan’s talent but his professionalism on set."