Does Pianus even spawn anymore?

Guys, I have a great idea. Let's make everyone so strong that they can kill bosses as fast as it took them to kill monsters pre-big bang. Then let's make it so that the bosses still take an eternity to spawn, but it'll be dead the second it comes back.

At least Pap is still a good source of exp since you can summon him 2 times a day. If only we could summon Pianus too.