Do you Need some type of Bank account to have and Use a PayPal account ?

Yes, you need a bank account or credit card to attach to your PayPal and verify your identity. when you pay with PayPal. Paypal account receives money from the bank account.

Take it your way
 
You may be able to register and get away with not adding one for a short time, but are limited in the amount you will spend or receive in your account and then will stop and not let you do anything until you add an account bank or credit card.

And if you are under 18, do not bother trying to avoid PayPal TOS think you can fib on your birth year and then get a prepaid card to validate what you are. That does not work well.