  In this work, we present a study to probe the nature of interactions between
black hole microstructures for the case of the BTZ black holes. Even though BTZ
black holes without any angular momentum or electric charge thermodynamically
behave as an ideal gas, i.e. with non-interacting microstructures; in the
presence of electric charge or angular momentum, BTZ black holes are associated
with repulsive interactions among the microstructures. We extend the study to
the case of exotic BTZ black holes with mass $M = \alpha m + \gamma
\frac{j}{l}$ and angular momentum $J=\alpha j + \gamma l m$, for arbitrary
values of $ (\alpha, \gamma)$ ranging from purely exotic $(\alpha=0,\gamma=1)$,
slightly exotic $(\alpha > \frac{1}{2},\gamma < \frac{1}{2})$ and highly exotic
$(\alpha < \frac{1}{2}, \gamma > \frac{1}{2})$. We find that unlike the normal
BTZ black holes (the case $\alpha =1,\gamma =0$), there exist both attraction
as well as repulsion dominated regions in all the cases of exotic BTZ black
holes.
