The Hero Academy is now a combination of two former buildings in Puzzle Breakers:
- Temple of Power
- Laboratory
It is unlocked at Castle level 6.
Temple of Power[]
The Temple of Power is your one-stop shop for upgrading and fusing your heroes, organizing the information in one area so that you know exactly what you need.
Now this next part's a bit tricky.
The temple lists all the possible 5★ and 6★ upgrades for every hero in the game, regardless if you have them or not (114 hero icons in total).
What does this mean?[]
- You will only see 5★ upgrade icons for Uncommon heroes, since heroes of that quality cannot be upgraded beyond 5★.
- You will see all of the Rare quality heroes listed in the Temple of Power TWICE; one for 5★ fusions, and one for 6★.
- All of the heroes from the Epic, Legendary, Mythic, and Exclusive hero qualities will be listed with just their 6★ icons.
There is a percentage (%) beneath each hero icon, which tells you how close you are to having all of the necessary hero ingredients for that hero's fusion. This percentage is based on the heroes that are currently in your inventory only. If you have copies of that same hero as a hero shard, for example, it will not count towards this completion percentage.
Overall, the Temple of Power is just another screen in the game where you can fuse heroes, as an alternative to fusion from the hero's screen.
For more information on how to fuse heroes, please visit the Hero Fusions page.
Laboratory[]
The Laboratory, or "Lab" is a very useful building which lets you use Magic Dust 
to exchange heroes for different ones of the same color.
You are able to do the following hero swaps at the Lab:
- 4★ heroes for
x20 - 5★ heroes for x100
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Notes:[]
- It is possible to swap 5★ of a low Quality (such as Uncommon) into a much higher Quality, including Exclusive heroes!
- It is NOT possible to swap from a 4★ hero to a 5★ hero under any circumstance.
- You always maintain the option to cancel a swap and keep the current hero that you have...however, you still end up losing the that you spent to make that swap.