Who is this guy and why do people have it as a pfp

Temmie is the undying.

Ok

Undertale, but nothing's wrong.

Its a sad ghost!!! #Ghost

Met a boy named Ninten today. Seemed cool. #CatsRuleEverythingAroundMe

https://secret.viralsachxd.com/a7c084f17

Send me messages and maybe I will answer them

Look at this little dude

say hi to porky 😈

What did Toby Fox mean by this?