The owner of the voice was none other than the Fury, the Flaming Lion King, who joined the search for his son along with his Lion Captains.
Fury knew that the wild monsters or the beast heroes from the three bestial races might kill the wild human; however, they would never harm his son as they knew the consequences of killing his son would be dire.
However, there was a single territory in the entire Beastnet that Fury was not confident that his son would not be harmed.
And it was none other than Ogre's territory, previously called Vulture King's territory, until the Flaming Lion King killed the Golden-Clawed Vulture King.
Since he had a bad history with the Ogre's territory, Fury feared that if his son and the wild human entered that territory, they would be killed and devoured by the Metal-clawed vultures without a doubt.
Therefore, he chose to search the Ogre's territory as it was the most dangerous territory for his son.