He is a part of the Six servants fairy tale
Story is of a prince who is trying to win the hand of a princess but has to complete super difficult tasks and the six servants all have special abilities to help him with completing his tasks.
Longneck is one of the servants who can stretch out his neck to see miles and miles further.
One thing I find now, a lot of these fairytales have a lot of violence in them secretly, but all that did not seem to bother me at all when I was younger hahaha