Dota Underlords Alliance contains 23 different types. It will grow up and new alliance will be added soon.
For each Dota Underlords Alliance, there are at least 2 different heroes . the hero level is between 1 and 5.
Two more different heroes with the same type alliance can give the team one buff positive or give enemy a buff negative.
The different alliance give the different build and combo to choose, the funny is based on it.