Our Leadership Team

Harry Walls


Harry Walls has served at The Master’s University since 2015. Before coming to California, Harry served as the senior pastor of Shades Mountain Independent Church in Birmingham, Alabama, where for twenty-seven years he shepherded and gave leadership to a church with a passion to pray, study God’s Word, and proclaim the gospel of Jesus Christ. Harry attended Brown University, where he played football, and graduated from Liberty University and Seminary, where he served as campus pastor while preparing for pastoral ministry. Harry was honored with a Doctorate of Divinity degree from The Master's Seminary in 2021. Harry and his wife, Karon, and have two children.

Carl Hargrove


Carl ministered at Grace Church from 1990–1993, was ordained, and pastored two churches in the Los Angeles area from 1994–2014 before returning to Grace Church. He has a passion for foreign missions and travels internationally each year supporting leaders and volunteers in various countries. Carl serves on several missions boards, holds a certification with the Association of Certified Biblical Counselors (ACBC), and serves as a board member of the Biblical Counseling and Discipleship Association of Southern California (BCDA SoCal). He also leads the Grace Advance ministry of Grace Church that provides pastoral leadership for developing churches. Carl has earned degrees from The University of Cincinnati and The Master's Seminary (M.Div., Th.M., D.Min.), and he serves as the dean of students, associate professor of pastoral ministries, and director of placement at The Master's Seminary. Currently, Carl co-pastors the Anchored fellowship group. He and his wife, Joanna, have five children.

Brett Zamroz


Brett is the Dean of Men and Director of Student Experience at the Master’s University. He is a graduate of TMU (2009), and after that went on to receive a Master of Arts in Religion from Philadelphia Biblical University. Prior to coming on board with TMU and TMF, Brett spent seven years in education, teaching Bible and Philosophy to high school juniors and seniors. Brett and his family attend Grace Community Church in Sun Valley, CA. He is married to Lisa, and they have three children: Griffin, Boston, and Brielle.

Todd Fletcher


Todd has served in various pastoral capacities since 2009 and as the Senior Pastor at Chapel in the Hills Church in Golden, CO, since 2015. He also served as the Administrator of TMF Colorado since the inception of The Master's Fellowship. Todd received his B.S. in Biblical Studies from Liberty University in 2013, his M.Div. from Denver Seminary in 2016, and his D.Min. from The Master’s Seminary in 2021. He is married to Glory, who was raised on the mission field in China, and they have four children: Knox, Kinsley, Olivia, and Owen. He is passionate about the Gospel, the proclamation of God’s Word, the Church, and the Great Commission.

Jonny Ardavanis


Jonny is the Dean of Campus Life at The Master’s University, a Camp Director at Hume Lake Christian Camps and hosts the devotional podcast Dial In. He is passionate about the Gospel and God’s word and desires to see people understand and obey it. Jonny is married to his best friend Caity Jean.

Marco Bartholomae


Marco serves as the Director of Membership at The Master’s Academy International (TMAI) in Los Angeles, California. Marco was born and raised in Berlin, Germany, where he served and studied at the European Bible Training Center (EBTC) since 2007. He finished his undergraduate studies at the EBTC, taught various classes with a focus on Church Administration and Biblical Discipleship & Counseling (Certified at the Association of Certified Biblical Counselors (ACBC) since 2014), and he still serves as the Director of the EBTC Master of Divinity program. Marco earned his Master of Divinity degree at The Master’s Seminary in 2015. He was part of a leadership group of a church plant in downtown Berlin in 2016 (Eckstein Gemeinde Berlin), where he served as the Teaching and Administrative Pastor. Marco is married to Katrina and they have four children.

Lucas Aleman


Lucas Alemán (M.Div., Th.M., Ph.D. Candidate) is Director of Spanish Education and Instructor of Old Testament at The Master’s Seminary, as well as Executive Director of the Sociedad Teológica Cristiana (Christian Theological Society). In addition, he pastors at Berea Bible Church in North Hollywood, California. He is the general editor and one of the authors of “La hermenéutica de Cristo” (“The Hermeneutic of Christ”), one of the contributors of “En ti confiaré” (“In You I Will Trust”), 2 vols., and one of the authors of “El orgullo” (“Pride”).
Lucas, a native of Argentina, began teaching in 2016 at The Master’s Seminary as an adjunct faculty member. While his courses of specialization are Old Testament Survey, Hebrew Grammar, and Hebrew Exegesis, he also teaches Greek Grammar, Greek Exegesis, and Theology. In 2018, he joined the faculty full-time. Lucas and his wife, Clara, have two sons, Elias Agustin and Enoc Emanuel, with a third due in September ‘21.

John Kim


John was born in South Central Los Angeles during the year of the first LA Watts Riots in 1965. It was during a summer camp in the summer of 1978 that John heard the gospel presented clearly and gave his life to Christ. Shortly after, he started attending Grace Community Church and grew tremendously under the ministry of John MacArthur and various youth pastors and staff who invested in his life. Exposure to the Korean American culture while attending UCLA gave John the opportunity to share his ministry experiences at various churches and it was after his sophomore year that he sensed God’s calling to go into ministry. After graduating from UCLA in 1988 with a degree in psychology, John attended and graduated from The Master's Seminary in 1991 and is currently in the Doctor of Ministry program at Talbot School of Theology. 
John has been married to his wife Angela since 1989 and has four daughters and a son-in-law: Jenna, Kara and Vasek, Alyssa, and Olivia.
John started his ministry at Grace Community Church, serving in the children’s and youth ministries as a volunteer staff member from 1979-1985, and as a pastoral intern for the junior high department in 1988. He went on to become a youth pastor at Valley Korean Community Church in Sylmar, CA, also helping develop a full-fledged English-speaking ministry, one of the first of its kind at the time. He went on to help start an English-speaking ministry in Columbia, Maryland from 1993-1997. After taking some time off of ministry, John and his family helped plant a church in San Diego in the summer of 1998, which became Lighthouse Bible Church of San Diego. After serving as senior pastor for 12 years, the vision of church planting became a reality as John and his family joined a team of about thirty people to plant Lighthouse Bible Church San Jose in the summer of 2010. The decision to plant a church in LA began with a view toward the long term future of not only church planting but in raising and training pastors for church planting as well as for placement in developing churches in varying pastoral roles. So the summer of 2013 brought a transition for John and his family to relocate to the greater LA region to plant a new church as well as to be a place where the development of a training and networking ministry could take place that would provide a cooperative relationship between the existing Lighthouse churches as well as for the future with the great hope and anticipation of God’s provision to pass on the greatness of God to the next generation (Psalm 145:4).