A trickster sprite from A Midsummer Night's Dream who is a servant and jester of Oberon. The character himself is based on older English mythology about a sprite who would cause travelers to lose their way at night with sounds and lights.
When Aleph arrives to the Yousei Kingdom ruled by Oberon, they encounter Puck who tries to throw the infidelily sap at Aleph but Hiroko gets hit with it, which makes her fall in love with the first person she sees. Oberon tells Aleph that he needs a sample of infidelily sap in order to undo the spell. Aleph later encounters Puck in a dungeon where he surrenders to Aleph. Here Aleph makes an alignment choice. Puck offers Aleph the sap for 10,000 macca. If Aleph accepts, he becomes more lawful. If he refuses, Puck will give the sap for free, which is a neutral choice. Aleph can refuse this offer, causing Puck to offer 10,000 macca as compensation for the trouble he caused. If Aleph becomes greedy and threatens Puck again, Puck will run away, dropping the sap but paying no money. The last two are chaotic choices.