[quote=@Gisk]
That's plenty of info to be getting on with.

Also, good to know the scale you had in mind, I was definitely thinking about it wrong. 

For reference, a blue whale is around that long, and I found this scale picture to give an idea of how big these guys are.

[img]http://i1.wp.com/sandiegowhalewatching.com/wp-content/uploads/2014/06/blue-whale-stats.jpg[/img]

EDIT: By the by, the things on the bottom are not meant to be to scale.  It's from a size comparison thing, and the bottom are your options.  The scale is the little people above the whale.  
[/quote]

Ahh yes that looks about right, I probably thought they'd be even  bigger.  But lets go with 80 feet.

[quote=@BurningCold]
[@Dynamo Frokane] These mechs are all around 80 feet tall? That seems kind of extreme to me. How do you even board one? That would take ages. 
[/quote]

Its about what I had envisioned, thats just a little bit bigger than a Gundam. I would assume there would be some sort of elevator inside the mech, or maybe like in titan fall, the mech can pick you up and put you inside the cockpit.