I'd like to bring this up again because I would like for it to be considered and addressed.
"The mysterious Master Hand is the source of creation in the Smash Bros. universe. He appears in Final Destination when all other rivals are defeated. He fights with a diverse move set and only grows stronger if you make him angry. If you know when to fight and when to dodge, you'll take him down!"
"THE source of creation in the Smash Bros. universe".
This isn't just a statement of him "creating things" and nothing else. He is
the source of creation. If someone told you their job was the source of their stress and anxiety, you'd assume that most, if not all of their stress and anxiety came from their job.
Also, notice how it says, THE source, and not just "oh he's a source"? This, to me, implies that he is the single source of creation in the Smash Bros. universe, at least in the grand scheme of things.
All of this in tandem, to me, means that all creation in the universe came from Master Hand, or at least has its roots in him. This means that either:
or
- He manually created every single individual thing in the universe
The former would be 3-A as it doesn't indicate anything about space-time. The latter would be 4-C to 4-A as he had to create each individual star and celestial body in the universe. We see on multiple stages that stars exist in the Smash universe, and that they're plentiful.