IDW Overlord is more influenced by the Hasbro toy's bio rather than Takara Overlord.

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"I stand my ground... I accept any challenge... I am hungry for conflict."

A legend by nature of his existence, he emerges as a new and deadly Decepticon anti-hero. This mighty machine has the Autobots guessing. No location is too remote and no terrain too tough for this megalithic power-monger. With amazing capabilities he traverses the dimensions, his multiple functions activated by Energon mini figures in engine mode. A tank to steamroll a path ahead and a jet for C-SAC duty (carrier, spy and air-combatant). The colossal body houses an arms manufacturing plant, producing a multitude of sophisticated super-weapons. The ultimate conversion is to Battle Station Complex. A strategic support base ready for the arrival of the Decepticon fleet... ready for all out war!
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↑IDW Overlord is pretty much this - hungering for conflict, an unstoppable force of destruction etc. The main thing that wasn't carried over was the battle station/base mode with the weapons plant, which is actually something that Hasbro carried over from Takara Overlord's tech specs:
「体内に兵器プラントを持ち、次々にミサイルや武器を生産する殺人兵器の集合体である。」
"Body houses weapons plant, producing and amassing a multitude of missiles and weapons."
IDW overlooked the base mode and Energon figures (Godmaster gimmick).

But that's where the similarity ends. Takara Overlord's persona is very different from Hasbro's. Whereas Hasbro Overlord is described as a relentless and unstoppable force who roams about the galaxy wreaking havoc, Takara Overlord is has a more noble personality. This culminates towards the end of Masterforce when Giga and Mega choose to leave Devil Z and ally themselves with Ginrai, and as punishment they were expelled from the Overlord transtector. And we know that at the end of Masterforce, Giga, Mega and the Decepticon Headmaster Jrs. go off to lead their lives as better people.

Post-Masterforce Takara Overlord really had zero personality. He was just a faceless goon in Transformers Zone. Really just put there alongside the others because by 1990 Takara's new Transformers were almost all Autobots. And they had to obscure these Decepticons with bling and capes because their toys were no longer in current production. Post-MF Overlord was little more than a plot complication, not a character.