Need help animating a sequence

First time on forum, so...Hello. I'm getting ready to finally do a short video with some custom Tron figures and light cycles my son and I built. I have been pulling my hair out on how best to animate the light cycles "rezzing" or coming together. I don't want to figure out how to do it via some 3D software, rather practical. I already know I want to highlight the edges in photoshop but I'm not sure the best way to have the bike come together "Lego style" while also manipulating the transparency as it forms under the character. Any and all creative ideas welcome/needed! Thanks! Mark