This card's name, "homunculus", means "little man" in Latin. Its name likely refers to its relatively low original ATK and DEF (1500) for a Level 6 monster. Homunculus is also the name of a being created by alchemy.
This card being golden is likely another alchemy reference, since much of alchemy was focused on the transmutation of lesser metals into gold.
"Golden Homunculus" has some similarities with "Shadow Ghoul". Both are one-Tribute monsters with relatively low ATK that grow stronger based on the number of cards in a certain zone (Banished cards for "Golden Homunculus" and Monster cards in the Graveyard for "Shadow Ghoul"). Both cards also have lower-level counterparts with no base ATK but a higher bonus per card ("Gren Maju Da Eiza" and "Chaos Necromancer", respectively).
However, "Golden Homunculus" gains more ATK per banished card than "Shadow Ghoul" gains per Monster card in the Graveyard; possibly to counteract its higher level, lower base ATK, and relatively higher difficulty in banishing large amounts of cards compared to getting Monster cards in the Graveyard.