Google image the username above you!

[Flowey]

This should be interesting here because of themes. If someone has a username that isn't their regular one, just search either one, it doesn't matter. Anyways, I searched Super Mario Boards and got:

 

[Zdrmonster Productions]

 

[Sprig]

 

[Flowey]

 

[Zdrmonster Productions]

 

[Ten]

 

[Flowey]

 

[Smonkey]

 

[Flowey]

 

[ObieStar]

 

[Ten]

dam

 

[Zdrmonster Productions]

 

[Thomas the Tank Engine]

 

[Ten]

 

[Zdrmonster Productions]

 

[Flowey]

 

[Wynn Liaw]

 

[MegaBowser64]

interesting

 

[SparksMarioWiki]

I Googled "KingBowser64" and this is what came up: