veemon
you need a T.F.U. it turns your captured or partner digimon into agumonx use it on koromon and it turns into agumon x
reptiledramon cant digivolve. it does not digivolve
Yes, Tankmon can digivolve to Gigadramon as part of Digimon Story Lost Evolution but it cannot then digivolve to Gundramon and it needs to be BlackAgumon before it can digivolve to Gigadramon, in Digimon Adventure 02: Tag Tamers it can digivolve to Kokuwamon and in the Digimon World 2 game Tankmon is capable of digivolving to Candlemon and thhen it can digivolve into either Tinmon or SkullMeramon, in Digimon World Dawn and Digimon World Dusk Tankmon ca digivolve to ToyAgumon and then it can advance further to MetalMamemon.
you digivolve a digimon
menu ... digimon ... digivolusion route ... X ... digivolve
It matters about the digimon, if you pass time it might digivolve to another digimon while some of them digivolve to another digimon if you have like 3 or more battles to make it digivolve. for an example: Greymon will digivolve to MetalGreymon with at least 10 battles, or he'll digivolve to MetalGreymon(Virus) if he has 30 Vaccine AP or he'll digivolve to SkullGreymon if you pass time. understand?
Calumon does not digivolve, he actually makes other digimon digivolve, but he does not.
veemon
you need a T.F.U. it turns your captured or partner digimon into agumonx use it on koromon and it turns into agumon x
reptiledramon cant digivolve. it does not digivolve
you have to be a certain tamer rank when you are that rank congratulations you can digivolve into mega
Yes, Tankmon can digivolve to Gigadramon as part of Digimon Story Lost Evolution but it cannot then digivolve to Gundramon and it needs to be BlackAgumon before it can digivolve to Gigadramon, in Digimon Adventure 02: Tag Tamers it can digivolve to Kokuwamon and in the Digimon World 2 game Tankmon is capable of digivolving to Candlemon and thhen it can digivolve into either Tinmon or SkullMeramon, in Digimon World Dawn and Digimon World Dusk Tankmon ca digivolve to ToyAgumon and then it can advance further to MetalMamemon.
you digivolve a digimon
No, you cannot. I think that Digimon have to be at the same level (Champion, Ultimate, etc) to DNA Digivolve. However, if you have a DNA Digivolved digimon, get one of the digimon you digivolved it with (Like for Silphymon, Aquilamon or Gatomon) and if you DNA Digivolve, it should result in their rookie forms.
At the moment (as of December 10, 2015) the ultimate level form of Digitamamon cannot digivolve or mega digivolve to any mega-level Digimon called HolyDigitamamon the only mega-level Digimon that Digitamamon can digivolve into are Titamon which is known as a "One-Man Digimon" and has the Virus attribute and Digitamamon can also digivolve to Devitamon which is a Mega-level Digimon, has the Mutant type and has the Data attribute.
Marcus' partner is Agumon and he can digivolve to GeoGreymon and then to RizeGreymon and then to ShineGreymon, Thomas' Digimon partner is Gaomon and he could digivolve to his Champion level form of Gaogamon and then to his ultimate form of MachGaogamon and then to his mega formof MirageGaogamon, Yoshi's partner is Lalamon and she can digivolve to Sunflowmon and then to Lilamon and Rosemon and Keenan Crier's Digimon partner is Falcomon and he can digivolve to Peckmon who could digivolve to Crowmon and then to Ravemon.