Giant insect creature

It appears to be an enormous planet-devouring arthropod.

the space god of spiders besieges the earth

ground-to-air missles being fired at alien ships (also there's a giant alien spider for some reason)

Missile Command

Commander Missile eagerly awaits orders after his promotion.

Oval shaped black... alien? with blue eyes peeking from inside a green backpack with a big yellow button

Bug-eyed alien enjoys Earth's natural beauty.

An alien hugging the Earth and saying, "Don't change anything. I love your natural beauty." It is crying purple tears.