How do you get frugooscape null and what does it do?

Question

I always have it in my bank, its annoying and wont let me withdraw it.

Answer 1

null is something that is useless it cant do anything  

Answer 2

null is money and you can only use money in relm 1 but in relm 2 witch is worlds 2-5 its useless because all there is  codes to get everything