@Samtastictogo They probably would be doable. I've wanted to make a few Sonic characters over the years, but was never satisfied with the shaping using bionicle/bricks.
@Leoxander Eggman was known to regularly outrun Sonic in the classic games oddly enough. I'm sure even a version from another dimension could manage that.
@Ninja I guess adding a goatee wasn't distinct enough for a bizarro Eggman when they were designing him, so aging him was the next best option.