1. I like the characters on the ship. Their actions were great.
Their roles were fantastic.
2. I like the animation used in the movie. With the help of the animation, the movie became great.
3. I like the iceberg which was being broken. It was wonderful.
4. I like some movie stars on the ship. Their acting was terrific.
(Would you check the expressions? Correct errors, please.)
# 3 doesn't make any sense.
The rest are fine.