You got the month wrong, I didn't notice, how about a Magikarp, Level 30, Splash, Tackle, Flail, Bounce, nicknamed Bob and Shiny?
I feel that this is a good Pokemon for BTS because it shows that in the start of school, you were bad and had major flaws, then at the end of the year/grade/whatever, you evolved into a really strong and intelligent Pokemon/person/carrot/4th dimensional cabbage
As memories of you fade into myths, new memories could be made, detailing your adventure.
So leave the greastest impact possible and you won't be talked about incorrectly.