User blog comment:DeathGodPrayer/Talk About What You Want!/@comment-16281343-20140418100232

Finally found where this image came from

Its' from " Lets Go with Training! ~Mascot Chapter~  "

Sairaorg is wearing an apple costume because he's promoting the specialty product of the Bael territory. That product was briefly mentioned in Volume 9.

The name of the mascot is "Bapple". B for Bael and apple for the product.

And the most surprising thing is the camel mascot behind Sairaorg is Lord Gremory!