Originally Posted by Kazuhito
Milleniumon was never an alter ego of Ryo's partner. He was an enemy in the Wonderswan games that starred Ken and Ryo, in that series Ryo's partner was a V-Mon I believe. The continuation of Tamers was also only a passing thing, it never got past a brief memo at the most, like I've said, Digimon was primarily aimed at children, so stories going longer than one season won't appeal to children as much.
Sorry about the length, but it's out of necessity.
Keep in mind that the Wonderswan games take place before the events of 02 and Tamers, respectively (Ryo's already missing in 02). Though they do tie into Tamers to an extent, they leave some things out. The games were originally intended to tie Digimon Adventure 01 and 02 together with Tamers. Also remember that back then, there were no
definite plans to even make a continuation of Tamers (until Season 3 ended).
Here's the thing to think about. If Tamers and Adventure 01 and 02 are tied together, then how is it that the two worlds (Tamers and Adventure) are so different? For that matter, where are Ryo's parents (and Ken for that matter)? They don't even make so much as a reference to them.
As far as Veemon is concerned, there is talk that it may be the one Daisuke/Davis has in 02, but that's just a rumor, so I can't confirm it 100 percent. It does seem likely though. Assuming Tamers is continued (which is still up in the air), if BanDai goes with the arc I know of, Veemon will in fact be the same one that Davis had. Also, Ryo will have quite a shock to deal with.
This is a general timeline of the games that Ryo is in.
1) Ryo has gotten his Digivice sometime before or during Season 1 of the anime, at least it looks that way from the first Wonderswan game package where he shows up with Taichi. However, he's also shown to have gotten another (Digivice) in
Tag Tamers, which takes place immediately after the Omegamon vs. Diablomon battle in one of the movies. Also, in "
Bokura no Wargame" he's shown in the same outfit he wore while adventuring with Taichi, but in
Tag Tamers he wears the blue pseudo-military shirt and green cargo pants he keeps during
Tag and D-1 Tamers. Yes, it's nitpicking, but what the hey.
2) For the extent of the games, Ryo's digimon partners tend to vary, so he never sticks to one for long. In
Tag Tamers, his partner of the moment was a V-mon who later Jogress/DNA evolved with Ken's Wormmon into Paildramon. No one knows whether this is the same V-mon that Daisuke/Davis has other than the creators. But events seem to point in that direction.
3) Where does Ryo end up disappearing to after
D-1 Tamers, anyway? Some fans think that he's either a military brat in the real world or a lone traveller in the Digital World. Again, who knows but the creators. It does offer some interesting fanfic possibilities, however.
As for Milleniumon. All four games (
Anode/Cathode Tamer, Tag Tamers, D-1 Tamers, Brave Tamer) had to do in some way with defeating Milleniumon. In each, he reincarnated in a different form. Here is where the Wonderswan games start to tie into 02. After the events of Tag Tamers, is when Milleniumon spread his Dark Seeds in 02. If you remember, one was intended for Ryo, but Ken pushed him out of the way and took the hit instead, essentially creating the Digimon Emperor.
At the end of
D-1 Tamers (which is assumed to be where the Tamers Series begins), Milleniumon mentions a bond with Ryo as being the reason he keeps coming back. He says he is 'the shadow to Ryo's light' and that one cannot exist without the other. What this means is anyone's guess, but that would explain why Milleniumon keeps coming back.
It's in
Brave Tamer that his personality is truly shown. No longer can he be considered just a mindless killer, he is shown with motives that suggest significant foresight. He is brilliantly intelligent in his plots and speaks in a rather cultured manner, yet doesn't seem to have a good handle on reality. Despite the revelation of his love for Ryo (he refers to Ryo as his beloved near the end of Brave Tamer), he doesn't seem to understand that his games have a damaging impact on the boy and believes that they are doomed to battle each other for eternity. He is capricious when he wants to be, vindictive, obsessive, megalomanic and egocetric. He also displays the true depth of his obsession.
*Timeline and game info from Polar's Digimon Land and syldra.net.
Out of this, I can gather these things:
1: Milleniumon is NOT dead.
2: Milleniumon can appear any time and in any form.
3: Milleniumon believes Ryo and he are doomed to battle for eternity.
4: Milleniumon cannot exist without Ryo and vice-versa.
5: Veemon may be the one Davis has.
6: Veemon is not Ryo's current partner.
Milleniumon wasn't originally an alter-ego of Ryo's partner Digimon. In my haste, I left out a few lines of what I was going to type. In the version of the Tamers Continuation from above, he was going to reincarnate within Monodramon. That was supposed to bring up the whole 'heroes having to fight their friend' scenario. Of course, this part is just rumor anyway, so it may not even mean anything.