Linzer

Linzer was born from a Trinket Tree and had a younger form at first. Sacher found him sleeping under the tree all by himself at night and decided to take him in when Linzer clung to Sacher like a small duckling following its parents. 

Most of the knowledge Linzer had including some languages were taught by Sacher, however he's observant and diligent enough to learn more new things on his own, about the forest and even helped to improve the relationship of Sacher with the other residence in the forest. (Sacher is bad at socializing with other people except with Linzer)

Soon after Linzer reached the age of 200, human came into the forest and deforestation was happening at a rapid rate where most of the forest residence / spirit were hunted down and eliminated by them within months. Upon discovering Linzer's Trinket Tree, human's greed intensifies in order to obtain all the jewels grown on that tree. Despite Sacher's effort in warding them off, human managed to distract Sacher away at night and proceed to cut down the tree. By the time Sacher was back, Linzer lay on the floor, weakened. Sacher was furious and wanted to avenge him but Linzer pleaded for Sacher to abandone hatred and to keep him and their precious memories in their heart and somewhere deep inside, Linzer was really happy Sacher's heart had space for Linzer. 

Sacher dragged Linzer's weakened body and embarked on a journey in finding him a new host tree but Linzer was too weak and eventually died during the travel...