What this demon with fire thing is?

I'm seeing it now and then on other characters, but I think it's the first time I see it on mine.
What is it?

 

Triple Wild Kargo Pet or Triple Yeti Pet effect.

 

There's an effect for triple wild kargo? Is it just visual or does it give any stat?

 

Visual effect for everybody when you stop walking with your character. No buff at all.

 

not really only kargo btw, u need 3 mini "insert maplestory mob/boss here"(Kargo, Yeti, Balrog etc) to get that effect, and yeah only cosmetic

 

I had forgotten about the Balrog.