The big rocki is the consequence of being unable to defeat rockis in time before they merge with other rockis. When the once docile rocki reaches low health and merges with another rocki, they will take on the form you are currently seeing. And will immediately attack the players nearby.
Battle: Big rockis shoot the same way they usually do, but their bombs are HUGE compared to the regular rocki projectile, and these bombs do far more damage with a much wider range. The powerful weapon of these fascinating creatures fire takes about 3 seconds to explode. As powerful as this weapon of destruction seems, you can block it with any shield to prevent direct explosive damage, though, watch out for the fall. These creatures also tend to hit themselves due to the range of their weapon, so use that to your advantage.
The big rocki has 240 maximum health, but those who fight well may slay it with ease! Sadly, you aren't rewarded anything directly for defeating them, not even exp. Once the big rocki has fallen, it will split back up into 2 rockis, who will frantically run around for around 10 seconds, seemingly terrified of their impending defeat. In this state, they wont fight back at all. However, the split rockis will be provocable to attack you again if you attack them once more after their fear runs out. These rockis DO provide you with exp and the possibility of rock shards when killed.
Attributes:
Special Behavior: Splits into 2 rockis when defeated.
Trivia:
* The big rocki will be hostile regardless of how it was formed, meaning it will attack you even if you weren't the cause of the 2 rockis merging. This can be witnessed especially within the fight with the Ancient Colossus, as its slam attack typically makes horas mobs of all kinds merge to them receiving damage too.