Who is Yenndo from Five Nights at Freddy's 5, and what is his purpose in the storyline of Five Nights at Freddy's 5?

In Five Nights at Freddy's 5 we all come to know that there are 5 animatronics, but there was one animatronic that we come to know later on that was never included. Why did Funtime Chica never appear in Five Nights at Freddy's 5?

Hello! Hello! You guys, we finally did it. We reached the 2,000 followers milestone on Gamejolt, as promised; here are the 2,000 followers shout-outs.

Shout-outs

Hello Everyone! I would like to shout out @Orror for this fantastic fan art of me!

Go check him out: https://gamejolt.com/@Orror

Thank you. @Orror

Why does Nightmare Foxy from Five Nights at Freddy's 4 convert into a plushy when you check on him every time?

What was Circus Baby's original pizzeria that she originated from?

Why does Scraptrap from Five Nights at Freddy's 6 look oddly different from the Springtrap we're all used to in Five Nights at Freddy's 3?

Why, in Five Nights at Freddy's 6, does Molten Freddy's voice resemble that of Funtime Freddy from Five Nights at Freddy's 5?

Is it possible that Golden Freddy was still around in Five Nights at Freddy's 3 while the other animatronics became phantoms?

What is Plushtrap's origin?