Rockantium

Rockantium’s club weighs half a ton. If we add this to the fact that his strength allows him to use it as if it were made of paper, you can imagine how hard he hits! You’ll rarely be able to move after being attacked by him!

Role: Tank/Attacker

Overview
Unlike other terrible monsters like Nebotus and Thundhare, this monster is meh, but still better than those two, but boy he is so slow, he will be outspeed from every monster you may encounter, even though he has no stun or Hardened trait, he will have lots of stuns, freezes, and possesses so basically it be easy to foes to kill him easier before he'll use any attack and suddenly will be killed, but still, he is not a bad monster, since he has alright Attack stat, he may at least can kill one foe. But seriously, thought he will be not necessary in a future, just give him Gold runes instead.

Pros:
 * Decent Skills
 * Not many cooldowns
 * Pretty good Health
 * Not bad Damage
 * Stun Skills

Cons:
 * 2nd Slowest Legendary after Worker Hulk
 * Bad trait

Catch!
Recommended Runes: 3 Speed; 3 Team Speed; 2 Strength, 1 Speed; 2 Life, 1 Speed
 * Rock Avalanche (50 Special Damage + Stun 32s/ 2-CD)
 * Stone Rod (30 Earth Damage + Stun 18s/ 1-CD
 * Rockorites (60 Special Damage 28s/ 1-CD)
 * Protect all Team (Allies 40% Shield 21s/ 2-CD)

He has no choice but simply get outspeed and simply die, but to make him at least survive and Protect Teammates, then the Life runes will be your choice but since he'll get stunned, frozen, or possessed, 3 Speed will at least give him a chance, since he is a stun debuffer, he can outspeed and at least stun one Dark monster that doesn't possess. If you have way better supporting monsters example General Thetys or Nishant's Pet, go for Team Speed, this way this gives them at least the chance to outspeed the other monsters that have higher Speed and give debuffs while the other Attacker can outspeed and OHKO all foes.

Counters
Since he has horrible Speed stat, he can be outspeed by any Dark monster and eat him for dinner, regardless if they use Strength runes, you can simply stun, freeze, or possess him to stun his foes, and end things. Basicly, any monster that's not Thundhare or Lagerchaun could kill him. Forget about it, Nebotus could probably still die to an element he's strong against.