What is the Big 3 anime of all time?

 The term "Big 3" was originally used to refer to the three most popular and influential shonen manga series in Japan in the early 2000s:

1. Naruto, 

2. One Piece,

3. Bleach. 

These manga were known for their long runs, large fanbases, and successful anime adaptations.

However, in more recent years, the term "Big 3" has been used to refer to other anime series as well, often in the context of popularizing anime to a mainstream audience. Some examples of other series that have been considered part of the "Big 3" in recent years include 

1. Attack on Titan, 

2. My Hero Academia,

Sword Art Online.

It's worth noting that the definition of the "Big 3" is subjective and can vary depending on who you ask. While some people may still consider the original "Big 3" to be the most influential anime series of all time, others may have different opinions based on their own personal preferences and experiences.