Mijumaru's final evo is probably my favorite final starter evolution ever. I so hope they're real. The Conch shell on its head could act as a way for it to use electricity, and be the Water/Electric type I've been wanting for a while. I think either Water/Electric, Water/Ground, Water/Ice (I don't want it, but its plausible) or just pure Water.
Tsutaja's is really cool. I like how to resembles the evolution of snakes, and it looks almost kingly. It looks like it'll learn DragonBreath. Typing could be Grass/Dragon, Grass/Psychic, Grass/Flying or just pure Grass.
Pokabo's is okay. It looks like a pig cave-man, which just sounds epic. It also looks like Ganondorf from Legend of Zelda, who is also epic. As for typing, Fire/Dark, Fire/Fighting (nonono) or pure Fire. Hey, maybe we'll get our first good pure fire type.
BTW, anyone notice the similarlities between these starters and the Hoenn starters. Pokabo's evos and Combusken/Blaziken both look like fighters, Sceptile and Tsutaja/Tsutaja's first evo resemble lizards, and Mijumaru's first evo looks like Marshtomp.