Hey everyone, I need your help !

I would like to change my username...for many reasons ( I dislike the "-Arts" and all the usernames related to krypton, or kryptonite are taken ) I thought about Kryp7on, which is not taken yet but....I don't know, I would like something new, something more funny, but still, something that represents me ! So I meditated on what describes me the best....it results with unicorns, rainbows and octopus

So I thought about these usernames :

FatUnicorn
Octobro
And my favorite : Octopunicorn !!!!!!!!!!!! ( I already imagine a mix of a creature with an octopus and a unicorn )

What is your opinion about it ? Do you have any other ideas ? Does Octopunicorn makes you laugh ?

Help me please !