Mega MechaBeast is an originally designed series of transforming figures, allowing BeastBox figures to become something more!
The BMM-01 Psychotrain can transport up to two BeastBox figures and then transform and combine with a single BeastBox figure to create a Mega MechaBeast figure. The Psychotrain features an elephant BeastBox which can transform into a cube, but can also be mounted on top of the Psychotrain to enter Combination Mode and create a Mega MechaBeast.
Other figures shown not included (sold separately)