The River Knights

A boy of a small jungle village is allowed by his parents to go for a walk alone in the jungle for the first time in his life so he takes the opportunity as a chance to explore the jungle knowing the dangers lurking within the jungle.
But there's one danger he doesn't know much about... The River Knights, a clan of warriors who live near the murky rivers of the jungle.

While on his walk, he decides to walk along the bank of one of the rivers deep within the jungle and here's rattling in the leaves ahead so he investigates. He then hears it next to him so he turns around...

He's staring into the eyes of a River Knight who takes him back to the clan leader where he becomes....

A River Knight