Board Thread:General Discussion/@comment-26968099-20151210045233/@comment-4010415-20151210050633

Actually, the only time that any Grimm has ever turned into rose petals was in the Red Trailer. All the other times that Ruby has killed any Grimm, they haven't turned into rose petals.

At first, the Red Trailer was a little demo for Matt and Burnie to get them to agree to let Monty, Miles, and Kerry make RWBY. When Matt and Burnie gave the okay, Monty worked with Miles and Kerry to plan out the story of RWBY, and he had Jeff Williams write a song for the Red Trailer (Red Like Roses). He edited the Red Trailer to go to the beat of Red Like Roses and added in the part with Summer's gravestone.

Basically, the Red Trailer was made super, super early on in production. At the time, they hadn't even decided on Ruby's personality yet.

It's like how the White Trailer was basically a prototype run for Dust, before Monty had fully decided what all he wanted Dust to actually do. That's why Dust acts differently in the White Trailer, aside from ice.

Black and Yellow were made with a much clearer idea in mind. All four trailers were made with some idea of each character's past in mind.