Some heroes are good, some suck, but most are okay.
4* heroes are the backbone of Empires.
Colen is a fighter class, same as Boldtusk, but Boldtusk helps others on the team ( for example versus an enemy Scarlett), while Colen is a solo red 4*.
Kelile and Scarlett are Rogue class, but Scarlett helps others on the team ( looking at you Wu Kong cascade squad ) while Kelile is a solo red 4*.
I intend to level Scarlett to Rogue 4*+19, Boldtusk to Fighter 4*+19, 2x Kelile 4* 3.60 and leave Colen at 4* 1.1 .