Chapter 3 edits, part 4

It was inlaid with a computer display that could project holographic images as well as act as a flat topped touch screen.

"flat topped" should be "flat-topped". I have a question for you: I noticed you are selective with your use of hyphenated phrases. I've let several issues I've seen with it slide, but with this I'm highlighting it because I wanted to understand your logic for using hyphens. Sometimes you use hyphens appropriately, other times you leave them out?

All the information at the world was at his finger tips.

"finger tips" should be "fingertips".

Those finger tips drummed on the obsidian top as he wore a perplexed expression.

See above recommendation.

Thundercracker, it appeared, was one of the Oldest Seekers aside of himself.

"Oldest" should be lowercase. "aside of himself" should be "aside from himself". Reference: http://www.learn-english-today.com/lessons/lesson_contents/grammar/of-from.html

All ready close to three million cycles of the Cybertronian sun

"All ready" should be "already". Reference: http://www.grammar-monster.com/easily_confused/already_all_ready.htm

and was one of the mech who was responsible

"mech" should be "mechs". Since "one of the" implies plurality, the noun that follows needs to be plural.

 A spectacular city Darkstar remembered it drifting above

Add a comma after "city".

extremely discriminatory toward grounders.

What are "grounders"?

Thundercracker was intelligent, artistic although extremely discriminatory toward grounders. Perhaps as a direct result of the grounding of his beloved VOS.

This flows strangely, what about "Thundercracker was intelligent and artistic, but extremely discriminatory towards grounders, perhaps as a direct result of the grounding of his beloved VOS."?