Starts at episode 11 'The Storm Of Friendship' just after agumon gets saved and Ken is still there on the Airdramon.
"Agumon" shouted Tai as he ran up to his partner relieved to finally have him back to his side.
"KEN" yelled Davis from his place "come down here and face us your self!".
"How about no, you may have agumon now but how about I bring in a one of my one-of-a-kind slaves! Come BurningGreymon!".
"What" everyone yelled in shock "Burning...Greymon" Tai said confused, snapping out of his confused state yelled for everyone to get ready as they herd a roar from the sky, looking up the saw a huge biped red, white and gold armored dragon with a pair of fiery orange wings and a white and red mask on it's face.
"Now go show those digi losers who's boss!"
"Look the dark spiral is on it's tail!" shouted TK a he went to group back with the destined. As the children grouped around each other they could hear Davis faintly muttering "child" while staring at the new digimon and it soon went to "no not again" and "give him back" till he ran out of he group shouting "KEN give me back my child!".
"Davis" yelled Kari "what are you talking about and come back here it's not safe" she tried to reach him but was held back by TK and Matt as a huge pillar of light surrouned Davis and the sound of glass shattering was heard, the light lasted for a minute and when it went out a huge floating rabbit like digimon with holy rings on each ear.
"Agumon do you know the name of that digimon?" asks Tai .
"That's Cherubimon a mega level celestial angel, watch out for his lighting attacks as they sure will take out your evil doings"
"But whats he doing here and were's Davis?" asked Cody.
"Who cares we have a mega level on our side now we can beat Ken" says Yolei excitedly.
Looking directly at BurningGreymon, Cherubimon lunged towards him "Lighting spear" he shouted in a surprisingly deep voice as he threw a bolt of lighting straight at armored dragon, dodging the attack BurningGreymon sent one of his own "Wildfire Tsunami" and swung his entire body towards Cherubimon sending the flames towards him "Lighting spear" the attacks hit each other and created a smokescreen that covered both digimon, all anyone could do was watch as the smoke cleared and they could see Cherubimon was holding BurningGreymon with both arms and wings pinned to it's sides "I'm sorry child but this is going to hurt" using as much strength as he can he hurls the dragon to the ground, the impact makes a crater in the ground with BurningGreymon in the center "Heaven's Judgement" a dark cloud forms in the are and rains 'Lighting spears' at the downed digimon.
Everyone was silent as lighting stopped and in the crater they could see a small rust coloured Tokomon with a fiery tail and no dark spiral in site, Cherubimon gently but quickly picked the small In-Training and starts looking around spotting the digidestined and seeing that Ken had already run of when he saw BurningGreymon was not winning, started to approach them.
Seeing the rabbit like mega coming closer to the the digimon started to get into fighting stances.
"Hey can any of you shiee Davish yet?" asked Veemon eyes scanning the area for his missing partner.
"I don't see him anywhere, Gotomon do you know where he went?" Patamon said
"I only saw him in that light, maybe Cherbimon can tell us" answered Gotomon.
Stopping in front of the destined and stares at them, not knowing what to do they started fidgeting.
"you know now that I have my memory's back, I can see why I didn't like TK a lot and why I was so obsessed about getting Kari's attention" stated Cherubimon
"But we don't know you and I'm pretty sure we'll know if we ever seen you" Yolei shouts.
With a small sigh a bright light covers the mega and shrinks, as the light fades out the see a boy a little shorter than TK wearing Cherubimon 'Themed' clothing, with a hood covering the top half of the face and holding the small unknown digimon in an arm, using the free arm pulls down the hood reveals Veemon's missing partner.
"you know you can close you mouths now" said Davis in a amused voice "and Tai you might wan to call a meeting"
