Here is Guilmon and Agumon.
I thought that if you think on all the 3 digimon seasion,then you can see that mostly the leaders have dinosaur-type looking digimons like Agumon,Veemon and Guilmon. And if you look closely there is allways someone that replace each other. Like Instead of Tai,who comes from the 1nd digimon and is the goggleboy leader,there is Davis from the 2nd (wich to has goggles and is the leader) and last Takato who too have goggles and (suprise) is the leader too. If you think hard,the leaders closest friends is resembling each other as well. Matt (closest friend to Tai), Ken (that is Davies friend) and last Henry that is takatos friend.
All this boys are cool and is in some way looking like each other. Same goes for their digimons.
So I decide to pair the ones i think is alike,both the kids and theire digimons from digimon 1,2 and 3 but not 4. I am not realy a fan of the 4nd seasion.
I put Guilmon and Agumon cos
1. They are the leaders digimon and they both
have a soft personality.

2.They both is dinosaur types and have both fire breathing attacks and claw attacks.