I'm sorry, what? The only personality I'm getting out of those pictures and your descriptions is that they're one dimensional, shitty characters. At that point why even try? Mario does a far better job of appealing to kids by simply being cute.
at that time we played video games for fun rather than emotional moments of tears or joy.
if you wanted more emotions, you just watched the cartoon series or movie.
that was the case with Mario, Sonic and (unfortunately) Zelda.
regarding more serious attempts, the perfect video game to animation adaptation is the OVA Ancient Book of Ys. At the time it was released it must have been revolutionary.
with the advent of CD and extensive video and speech videos, there wasnt really a need for a TV series anymore, since in-game sequences were more appropriate and as the creators wanted them to be.
Hence why the best Sonic cartoons were the ones who did not take themselves too seriously and were independent of the game plot, while the 2003 Japanese version tried to add a serious story and characters. They messed things up (except the short romance between Tails and Cosmo).
Same with the Mario cartoon or Captain N. it was so funny and low budget. Too bad that wackyness never translated into any Mario game
Really, after the Multimedia revolution, Video game to Animation adaptations were never the same again.
Kids playing video games after the CD console days will certainly have a more emotional impact. Hence it is hard for me to find any emotion out of those new designs, though a kid will have a completely different opinion on them.
regarding an effective desing for children with emotions, you'll find it in illustrated book for children rather than video games. Or even in animated movies and shorts.
video games, with the exception of some indie production, dont deviate from the norm that much.