Winkel's Trust Master reward is the Treasure Lantern.
Entries for different versions of Winkel.3★ - No. 1625: An infamous grave robber from Paladia. A worldly-minded person who only craves fame and fortune, he does whatever it takes in order to obtain treasure, even indiscriminately laying waste to ruins. Although he tends to show off knowledge freshly obtained for his goal, the information is sparse and the content superficial.4★ - No. 1626: A grave robber who seeks treasure to obtain fame and fortune. He tends to seek the spotlight and never forgets to drop his name. He views the two moles as his rivals, time and again blocking their path and challenging them to fights only to increase his record of straight defeats. He suddenly stopped grave robbing after getting his hands on a certain "treasure."5★ - No. 1627: A longtime companion of the two adventures known as "the moles". He left his name as the curator of a museum open to the public displaying all of the treasure that he had obtained. Edel asked him to watch over her home when she left on a new adventure, and even after he passed away, his family has been fulfilling that role for generation after generation.
Winkel's stats at his highest levels are as follows (with no passive abilities taken into account), along with the maximum amount of stat points that can be increased through pot-enhancements:
Winkel can equip the following weapons: Sword, Gun, Fist
He can equip the following armor: Light Shield, Hat, Helm, Clothes, Light Armor
He can equip accessories.