@Locust
Those featured on two page spreads are BumbleBee, Perceptor, Optimus Prime, CliffJumper, Jazz, Vortex, Swindle, Brawl, Bruticus, Onslaught, Blast Off, Soundwave, Megatron, StarScream, Grimlock, Sludge, Slug, Snarl, Swoop and Jetfire.
Those with two or three Transformers on a page are Insecticons, Hardshell, Sharpshot, KickBack, Hound, WheelJack, Metroplex, Prowl, Ultra Magnus, Zeta Prime, Shockwave, Drag Strip, Quake, Ravage, Sentry, Leaper, Springer and Broadside.
@Locust
Those featured on two page spreads are BumbleBee, Perceptor, Optimus Prime, CliffJumper, Jazz, Vortex, Swindle, Brawl, Bruticus, Onslaught, Blast Off, Soundwave, Megatron, StarScream, Grimlock, Sludge, Slug, Snarl, Swoop and Jetfire.
Those with two or three Transformers on a page are Insecticons, Hardshell, Sharpshot, KickBack, Hound, WheelJack, Metroplex, Prowl, Ultra Magnus, Zeta Prime, Shockwave, Drag Strip, Quake, Ravage, Sentry, Leaper, Springer and Broadside.
So yes, there's a lot of character concept art.