This 文章 contains opinionated view so this is/may not be factual.

In No particular order, here:

1. Ash and Red
"Are they the same person?", the most common and the main discussion of this topic.
Though they are not but this 问题 has always been raised. They are also compared in their Pokemon training skills.





2. Mew vs. Mewtwo
Another topic which has been heavily discussed. Mew vs. Mewtwo is one of the most 流行的 Pokemon comparison. With Mewtwo clearly having higher base stats than Mew, and also the highest base stats of the Kanto region, the other side still holds good. It doesn't have an official conclusion of who's the stronger one i think.












3. Misty, May and Dawn
Pokegirls!! xD I don't think i need to say anything but anyways. This topic is no doubt a very 流行的 one, with the heavy arguments and discussions all over, it remains as a 流行的 one of all time. Friendly discussions are often seen.



















4. "Ash is still a 10 年 old"
With Ash Ketchum remaining 10 after the 15 years of the anime, why would this not be a 流行的 topic xD 粉丝 assuming Ash's current age would be the main activity on this matter.















5.) Digimon vs. Pokemon
Personally, i hate this topic and see no reasons for comparison, what i see the most is bias. Only because there's "mon" in both don't mean they are comparable. Still, this topic is very active and indeed a 流行的 one. "Which one came first?" would be the most repeated 问题 here.







6.) Bring Misty back!
The original girl leaving the 日本动漫 was really very sad especially for the Misty fans. Petitions were hold 由 粉丝 to bring her back, don't know what results the petitions had but many 粉丝 still miss Misty. Though there's no probability of her returning as a main character but many re-appearances has been made.














7.) If Pokemon were real
Another 流行的 topic. 'Imagination' would be the main activity i guess. The most 流行的 related thing would be Smosh's "Pokemon In Real Life".











8.) 0riginal 151 Pokemon!
"Catch 'em, Catch 'em, Gotta Catch 'em all, Gotta Catch 'em all! Pokemon!" Who don't 爱情 the Pokérap? xD 你 might 爱情 the other generation Pokemon 更多 but agree 或者 not, the original 151 Pokemon were the best! These Pokemon were and are in trend!











9.) Pokeshipping vs. Pearlshipping
Two most 流行的 shippings of Pokemon! And the most 流行的 that includes Ash Ketchum, so what do 你 expect? xD Both shippings are very 流行的 among the fans. From various hints in the 日本动漫 to songs like 'High Touch' performed 由 the seiyuus of Ash and Dawn themselves are taken into count.












10.) Pikachu!
皮卡丘 is itself a very 流行的 Pokemon topic. Its the most 最喜爱的 Pokemon all over. Even who don't know much about Pokemon, is sure to know Pikachu.














-------------------------------------------------------------------------
There maybe some 更多 but these are the ones which came to my mind =) would be glad to find some 更多 so do tell ;D