Answer:
I am a type of weapon for SCI-FI characters
Take away my first letter take away my second letter take away all my letters and I would remain the same.
I am a key that is playful. What am I?
I belong to everyone. Sometimes make you happy sometimes make you sad. I will never end until the day you do.
I am not alive but I grow I don't have lungs but I need air I don't have a mouth but water kills me. What am I?
A little house full of meat, no door to go in and eat.