Machines Wars and RobotMasters are their own unique franchises separate from Generation 2.
Fictionally, RobotMasters takes place at some point in 2004, after seasons 1 & 2 of the G1 cartoon's Japanese dub (Fight! Super Robot Lifeform Transformers), and the 1986 G1 movie's Japanese dub.
Machine Wars, however, has had no real fiction of its own, aside from its toy bios. The toy bios do seem to indicate that ten of the twelve Machine Wars toys are their G1 characters in new bodies, with the other two being new characters of Megaplex (a clone of Megatron) and Hubcap (whose bio describes him quite differently from G1 Hubcap). A mention in Megatron's bio of him taking to the skies "again" references one of his unreleased G2 toys (a redeco of G2 Dreadwing) implies that these Machine Wars toys represent a post-G2 rendition of each character.
The Japanese seem to have tried to also work this toyline into some post-G2 placement at one point, having once created the flowchart seen below and placed it after their Japanese G2 fiction.
The bio for e-Hobby Black Starscream make mention of the Machine Wars in past tense, implying that that particular Starscream represents a post-Machine Wars body for Starscream.
If you've read Exodus, wanna read the War For Cybertron comic? PM me.
Shadowman wrote:This is Sabrblade we're talking about. His ability to store trivial information about TV shows is downright superhuman.
Caelus wrote:My wife pointed out something interesting about the prehistoric Predacons. I said that everyone was complaining because transforming for them mostly consisted of them just standing up-right. She essentially said, 'So? That's what our ancestors did.'