All the files are available for free to use anywhere you want to.
The pre-supported are "ready to print" and here to help but definitely not the best supports for the max quality print you could have, i recommend tweaking the current one or redo the all thing.
The 2 fighters in the pictures are from Blood Orange Miniatures Patreon and obviously not available in this pack,
check him out on MMF or Patreon
I made a full video of the making and painting of this diorama,
check my Youtube Channel