Krishna Shenoy (Image credit: Wikipedia) Krishna Vaughn Shenoy was the most empathetic person we’ve ever known. He will surely be remembered for his scientific impact, but his remarkable kindness and devotion to others will also be a lasting part of his legacy. He could touch a person’s life from a five-minute interaction, let alone adecade-longmentoring relationship. What we have learned from Krishna has made us better scientists and, more importantly, better people. Krishna passed away on January 21, 2023, at age 54 after a long struggle with pancreatic cancer. He was first diagnosed in 2011, finally succumbing nearly 12 years after his diagnosis. We had begun to think he was invincible. Throughout his illness, Krishna continued to live his life with a sense of purpose and also with a sense of play and wonderment. He squeezed as much life, nurturing, and good work into his 54 years as a person possibly could. Krishna’s scientific legacy can be roughly divided into two categories: contributions to brain-computer interface (BCI) systems to help people with paralysis and contributions to our basic science understanding of how the brain controls movement. Our discussion of his scientific legacy here focuses on the former. Other tributes to Krishna will focus on the latter. There are more lessons to learn from Krishna’s example, and stories to cherish, than can possibly fit into any short piece, but we hope to share with those who did not know him a sense of the magic and joy that he brought to science and mentoring.