Scrap Soldier causes me to break my Scrap pun vow. It's more like Crap Soldier.

First off, he's a level 5 Tuner with low ATK and no inherit special summoning ability. Right away, that isn't good. Slightly worse because he can only make other Scraps. And that's all he does.

He needs to be in face-up defense, then be attacked, and survive in order to blow himself up and use his generic Scrap ability. Especially with 700 DEF, that's atrocious. You'll need Waboku to make that happen, and that's alreayd useless.

-1/5
Art: Scrap Goblin wannabe.
Fun Fact: The Land of Ooo is post-apocalyptic Earth.
Tomorrow: Am I the only one who relates them to strawberries?

Alright, scrap soldier.  He is an alright card for the scrap archetype to have, but it does have its flaws. 

First, is a level five monster, making him difficult to utilize while in your hand, not to mention his very low stats make him even worse to have in your hand. It definitely needs to be put in the graveyard as soon as possible. Next, it can only be used for scrap synchros. This might not seem so bad since it is a level 5 tuner, but in those moments where you would use him and a scrap searcher to make a goyo guardian or a brionic, you can’t do it. On the other hand, scrap soldier isn’t completely useless.

                Scrap soldier broadened the range of the possible synchro summoning for scrap chimera. With soldier, you can easily use scrap twin, which can turn the tide of some duels.  Or you could wait to synchro with soldier and chimera to do more damage, using soldier to run over a semi strong monster of theirs.  Scrap soldier was a fine addition to the scrap deck, but I would never run more than one, because it can clog your hand, and you can simply reuse it once it hits the grave.
Traditional-1/5
Advanced-2/5