Here is my idea,

The Code On The Floor:

The code is meaning the dead mountain, Ice ghosts, and Derrick are going to be revived in the heal thing labs. With the green and yellow vials. Once done there will be an attack. Everyone will be back. The undead will return with the new vials left in the healing labs. Also in the healing lab sign there is an embedded sword. In conclusion the mountain, rover, Derrik and maybe the rest of the Bh will be revived.

What The Undead Are Like:

They are more powerful with all the new vials there is bound to be a new way to make them all more powerful. Like the piffle in the blue flame.

How To Make Army For Skrek:

Take normal penguins, Knights, or black hands. Take the vials in the healing labs you will have to get to them first. Then we will have to kill or have dancebear heal using something different to incorporate the vials (to be updated)

u copied my code on the floor thing xd
soz if u never knew about the fact i madde a post on it earlier