<Li> AJ ( voiced by Dusan Brown ( season 1 -- early season 2 ) and later by Caleel Harris ) is Blaze 's best friend and driver , an eight - year - old science and technology expert . AJ 's racing suit technology includes his Visor View & a wrist - com video watch worn on his left arm . His uniform can also undergo minor changes in appearance , such as when Blaze transforms into a Race Car , & Blaze using his Speed Lights . </Li>
<Li> AJ ( voiced by Dusan Brown ( season 1 -- early season 2 ) and later by Caleel Harris ) is Blaze 's best friend and driver , an eight - year - old science and technology expert . AJ 's racing suit technology includes his Visor View & a wrist - com video watch worn on his left arm . His uniform can also undergo minor changes in appearance , such as when Blaze transforms into a Race Car , & Blaze using his Speed Lights . </Li>
who plays aj in blaze and the monster machines
who plays aj in blaze and the monster machines
Dusan Brown Caleel Harris
Dusan Brown Caleel Harris