Hints at Evolutions.
Its seems that for some digimon, that they have some feature or hint in their profile that it can evolve to or from some digimon. For example, it seems that marinedevimon's main champion form is gesomon since it's tentacles are the same exact ones that gesomon. Another exmple is mercurimon;s fur coat resembles garurumon meaning its main ultimate form could be were garurmon. It is also that vegiemon evolves to vademon since it's profile says that its grows a strange fruit at some point and says the truth will be revealed. While vademon's official profile states that it is said it came from the fruit of a strange plant.
Its seems that for some digimon, that they have some feature or hint in their profile that it can evolve to or from some digimon. For example, it seems that marinedevimon's main champion form is gesomon since it's tentacles are the same exact ones that gesomon. Another exmple is mercurimon;s fur coat resembles garurumon meaning its main ultimate form could be were garurmon. It is also that vegiemon evolves to vademon since it's profile says that its grows a strange fruit at some point and says the truth will be revealed. While vademon's official profile states that it is said it came from the fruit of a strange plant.