Spencer was once married to Kendra Benham, who worked alongside him in Neon Genesis Evangelion as Maya Ibuki. Spencer holds a brownbelt in aikido and a 2nd degree black belt in Tae Kwon Do. Spencer is married to multi-passionate Entrepreneur, owner of Fitness with Kim and CrownYourself.com, Screenwriter, Kim MacKenzie, a former Miss California contestant and Miss Norway 2014 in the Queen of the Universe Pageant, as of October 4, 2014. He is a foodie and has a website called DontKillYourDate.com. Spike and Kim have one child, named Declan, who was born on July 29, 2017.