Seeing as the author is the person that sent the message, you already have their User instance. Because of that, you can just use message.author.name to get their name.
memeEmbed = discord.Embed(title="Meme from {0.author.name}".format(message), color=0x000000)
Also, I’d recommend using Commands instead of manually parsing everything in on_message. I see you doing this:
if message.content.startswith(‘!meme’)
which is unnecessary & will make your code a bit cluttered and hard to maintain if you end up creating more commands. It also doesn’t allow a lot of things like for example aliases (without 90000 if-statements which, again, make your code less readable & maintainable).
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