>>17806397Something like in Jade Cocoon then?
In the original, monsters caught at a low level have dumpy baby-like proportions that slowly grew out into full-bodied magnificence with every couple levels or so - it was gradual enough that I never really noticed my team growing until the end game where you can battle level 1 monsters alongside level 20+ adults
In the second game - they introduced evolution much like in pokemon, but as the monster approached the level where it was about to transform, its proportions changed a bit to somewhat resemble the form it was growing into - like say longer limbs and horn, thicker tail and larger body in proportion to the head, among other things.