Voivod - one of Mikael's influences !
I recommend all albums except the first two, so :
Killing Technology - Dimension Hatross - Nothingface (all classics, try picture a mix of King Crimson and thrash metal with a sci-fi imagery approach, and you might have an idea...) The only band I can compare these albums with would be Coroner, incidentally on the same label during the same time period (the Punishment for Decadence, No More Color and Mental Vortex albums find these two bands having a similar approach and evolution... If you don't know Coroner, check them out! The album Grin is also highly recommended!)
And then, 2 criminally underrated albums : Angel Rat and The Outer Limits. 2 albums where they strayed a bit from their original sound and experimented a lot with sounds and songwriting. Angel Rat sounds like Rush in moments, and my all-time favorite Voivod song is found on The Outer Limits, I have named Jack Luminous. A 17 minutes long prog-metal masterpiece, unsurpassed as of yet by ANY band.
The Negatron album saw the band reduced to a trio with a new singer, and even though the album has it's moments, it's probably my least favorite. Phobos, the second album with the trio lineup was much better, in my humble opinion.
The Voivod album saw the return of Snake on vocals and the addition of Jason "Jasonic" Newsted on bass. Very good album, though I find Snake was not in top shape, and Piggy probably not as creative as ever.
One of the only bands from the province of Quebec (Canada) to have a worldly impact, probably my all-time favorite guitarist for his creativity in an age of copycats, R.I.P. Piggy, the metal scene is shattered without you...
Cheers !