Lord-Slug (Young & Giant) vs...

[Fantastische Hure]

Youthful Lord Slug vs...

<div class='spoiler_toggle'>Spoiler: click to toggle</div><div class="spoiler" style="display:none;">Captain-Ginyu

1st Form Freeza

2nd Form Freeza

3rd Form Freeza</div>

Giant Lord Slug vs...

<div class='spoiler_toggle'>Spoiler: click to toggle</div><div class="spoiler" style="display:none;">Vegeta (post-Zenkai; @True Form Freeza)

Goku (Namek)

Initial True Form Freeza

Goku (post-Yardat)</div>

 

[Pakl]

Young Slug beat Ginyu but loses to 1st form Freeza IMO or at most rivals him

Giant Slug beats Vegeta but loses to Goku

 

[Fantastische Hure]

Giant Slug beats Vegeta but loses to Goku

Base Goku, in all fights.

 

[Lord Brofist]

Under the inference that Movie 4 Goku is Pre-Ginyu fight.

Youth Slug potentially get passed them all. I don't think there's much of a problem with that.

Giant Slug might also be able to pass the list but I'm too lazy to look at where my numbers are in regards to Base Yardrat Goku. I'm also inferring Initial Freeza is the the one who warmed up against Goku and not his 50% power. Otherwise I'm not too sure Giant Slug would handle that.

Now if we infer Post-Zenkai Goku, Slug's going to be eating people and merging their soul with his black heart like something out of Carpenter's The Thing.