The manifestation of gnomes is varied and complex, from those who are very small to those who are the giants of the mountains.
Gnomes are very loyal. To them trust is a matter of honor. When they befriend and are befriended they are loyal to the very end, and they will remain in that association even if abused. And therefore, many of them have come under the influence of black magicians and their practices to imprison elementals. Thus you sometimes see gnomes depicted as mischievous, and even worse.
This little guy is in no hurry and is looking to befriend a kind person. He's waving goodbye to the gnome on the frog who just jumped over him.