|Voiced By:||T.J. Miller|
|Family:|| Unnamed parents (deceased)|
Ace Virtueson, Pudge Meekway, Christi Lovejoy, Racer Loyalton, Miriam Peace, Sandy McMercy, Booker Thriftmore, Reginald Upright, J. Michael Kindhart, & Hapford Humblen (ancestors)
Becky McMercy (cousin)
Ronny Vain & Susie Selfwill (older cousins)
|Cause of Death:||Respiratory failure|
|Alias:||J. Michael II|
|Date of Birth:||January 3, 1996|
|Abilities:|| Mouth mirror|
Other dangerous utensils
Dr. Kindhart, the second J. Michael Kindhart is the deceased character from ACE, and he is the main antagonist in Disney's Ace & Christi Series: The Red Rag Riddle. He is voiced by T.J. Miller.
Dr. Kindhart is an 18-year old African-Canadian-Scottish guy and has black hair, dark skin, and brown eyes. He also wear a white lab coat, white gloves, yellow goggles, medicine mask, teal nurse shirt, teal nurse pants, and gray shoes. His birthday is on the 3rd of January.
- The first J. Michael's parents are alive. However, the second J. Michael's parents died when he was a dentist.
- He is the only character in ACE School Of Tomorrow who kills anyone.
- He is a dentist by the age of 18.
- Dr. Kindhart is Ace, Christi, and their friends' deceased ancestor. However, he dies at the end of the story.
- His real name is J. Michael Howard Kindhart II.
- He is mentioned in Disney's Ace & Christi Series: Summer Fun With Ace & Christi, Disney's Ace & Christi Series: Miracle At Camp Frienship, Disney's Ace & Christi Series: Grandpa's Christmas Gift, and ACE PACEs.
- However, the first J. Michael's parents have their names, and the second J. Michael's parents didn't have their names.
- He is the enemy of Pudge, J. Michael, and their friends.
- His cause of death is respiratory failure.
- He will appear as a cameo in Disney Junior Canada series, Disney's Ace & Christi Series.