If the resshas were people what would the ressha's personality and look be like and why?
Refer to J-drama and toku actors for looks if needed.

So I was thinking if Diesel Ressha was a person it would be an old energetic man who probably talks like Grunkle Stan and complain time to time of having a bad back. Light always calls him gramps so that is the image I get. Thoughts?

Tank Ressha is definitely someone who is energetic and always has supplies for the group.

Car Carrier is a model collector who takes pride in the amount and rarity of the models she's acquired

Fire is basically Inferno from Transformers, loving burning things and rescuing in equal measure

Police is a bit of a killjoy but ultimately wants what's best for the Rainbow Line

Shield is a small kid who is very nimble and takes blows meant for the others and shrugs them off

For Shield, I was thinking a small guy who takes his job seriously and only talks in high-pitched grunts.

They'd be like the "I like trains kid" from ASDF.