Naruto characters make for good observations, who knew?

When it comes to the Konoha 12 and their designs, who out of them is the most likely to become a teacher?
If you said Rock Lee, you would be right.
If you said Shino, I'd have to question your logic, yet Shino has essentially taken Ebisu's place as the goofy put upon teacher, yet one look at his design from Season 1 would suggest a different path.
The vibe I get is mysterious, stoic, unflinching, he's about to kill you.
His insect ninjutsu would suggest that he's into some horrific torture methods so I would've picked him as an interrogation officer for ANBU, but come Boruto he's lost all his cool mysterious aura and become a goofy teacher, it's a complete 180 degrees in terms of change, especially when the rest of the 12 were pretty easy to predict, even Neji with the way he talked about his fate in his clan was always destined to die.
Is this a good character? Hard to say really, he was done pretty dirty throughout his run as a character, he lost his relevance after the Chuunin exam, so seeing Shino like this as an adult makes me wonder what triggered that change in personality or maybe it was just a phase.