Transformers Convoy no Nazo - Final battle & the real ending

I wasn't aware of the other endings until I saw mikeyspiky200's Transformers review. I didn't find a translation to the text it said in the ending of my previous video. I decided to play the game through again TWICE (not fun), and beat it once by collecting all R, O, D, I, M, U and S letters, then second time playing as Rodimus.