When re-reading I decided to do a proposal for him seeing he can meet the criteria.
What’s The Work?
That Time I Got Reincarnated as a Slime is an light novel about an worker who was reincarnated as a slime who formed an nation and befriended a dragon while trying to make a nation to enjoy his life enjoyable like in his old world. It also got Anime, Manga, and mobile & console games too
Who He Is He?
Reiner is the former Guard Captain of Engrassia under Prince Erric who serves as a enemy of Rimuru Tempest and Hinata Sakaguchi.
What Has He Done?
He attempts to use a orb to mind control Rimuru Tempest which failed miserably and later tried to pick a fight with Hinata Sakaguchi trying to attack her and not only failed miserbly but ends up wetting himself in front of a entire council.
Later on he he allies with Vega offering revenge where Reiner would end up becoming a Demonoid to try and seek revenge on Hinata Sakaguchi. While he had the upperhand at first he eventually had the tables turned on him and lost horribly. He would eventually be turned into a Evil Dragon Beast by Vega before being killed by Hinata Sakaguchi.
Is He Unintelligent?
He has a few Genius Diz members being good at sword skills but besides that although he despite being a Knight Guard Captain he makes very unintelligible decisions due to his delusion and arrogance due to his status. Even then his sword skills ain’t much given he tries to pick fights he overestimates here.
For example he severely underestimated how easily he can mind control Rimuru Tempest yet failed miserbly and tied to fight Hinata Sakaguchi a MB twice with first time wetting himself from her aura and loosing horribly in their second fight when his newfound power made him so egotistical he still failed.
Does He Lack Charisma?
Any he had is faked under Faux Affiby Evil so it ain’t genuine outside of it.
Is He Slimmy?
He wanted to make Hinata Sakaguchi his plaything and even tried to make her beg out of sadism.
His He Cowardly?
As soon as he realised Hinata Sakaguchi overpowered him he became cowardly so yes.
Is He Unlikable?
Very much yes as he tried to ruin Rimuru Tempest’s attempt of joining Western Counsel and wanted to make Hinata Sakaguchi his plaything as well as willingly aiding someone like Vega trying to get revenge on her.
Possible Preventing Factors?
He his only redeeming quality is being loyal to his master Prince Erric other than that nothing else.
Despite how horrible his death it doesn’t make him a scapegoat since he fallen too far and brought it upon himself.
Verdict?
I say yes while he has a few intelligent moments they’re outweighed by his poor decision making of thinking he can mind control Rimuru Tempest and try to pick a fight with Hinata Sakaguchi a MB twice first time resulted in him wetting himself and second time resulting in his death with him trying to torment her or even make her his plaything. His massive pride and ego make him very unintelligible despite being a Guard Captain, he makes very terrible decisions.
He is only loyal to Prince Erric but it is just one redeeming quality outweighed by a bunch more negative qualities and his death doesn’t make him a scapegoat due to him bringing it up upon himself.