Unobtainable Monsters
Twiggy - #78
Branchy - #79
Phoenix - #120
Bolt - #139
I strongly suggest that these monsters are made available, so myself and others can complete the Encyclopedia. I'm not concerned with how hard they make them to obtain, for instance Phoenix (as I imagine his stats to be excellent), as long as they make it technically possible.
On a separate note, monsters purchased from the Encyclopedia itself or given as a reward for collecting stars[i] or [i]monsters are only obtainable once, resulting in monsters such as Roco, Crystal and Lava for instance almost being ruled out as effective monsters since their potential to upgrade is non-existent. While I can appreciate the aforementioned monsters are not the most desirable, my suggestion would be that once they are already obtained, there is at least some method to obtain them again, whether that be through the Alchemy or Encyclopedia.