Why Ceres spawns low health troops?

Can anyone help me? I want to know why ceres summons low health troops. Means, if it copies a max health monk, which have full health, why a monk which have lost most of its health appears. I want to know, is it working of ceres or a bug?

They are ghosts.

That thing, I know… why there are of low health. They are summoned as their most health is already taken away, even though their parent troops have full health…

So that Ceres is a balanced pal instead of it being overpowered.