Answer:
I am a type of weapon for SCI-FI characters
I contain six letters minus one and you got twelve.
I have memories but none of my own whatever's on my inside is what is shown. If I'm ever different it's because you changed me I feel like a decoration here for you to arrange me.
I have three feet but no arms or legs
What is black and white and red all over?
What made Cyclops quit teaching?