Generation II introduced a trio of legendaries known as Legendary Beasts. Which one is your favourite? Please remember not to spam and explain your choice a bit.
They're all cool in their own way, but Suicune stands out the most for me. I just love its design, and the fact that it was the star of both Crystal and the fourth movie (along with Celebi). I also liked how Eusine was always chasing after it, and his looks somewhat resembling Suicune's.
I like all three, but Raikou is my favourite. I like its high Speed and Special Attack. Suicune just can't hit hard, and I really disliked how Entei was unable to learn Flare Blitz naturally in Generation IV, then got Sacred Fire in X/Y (it still irks me, even if it is related to Ho-oh).
I mostly like Entei because of its volcanic colours, which are refined to a fault, and majestic figure making it one of my favourite legendary Pokémon of all time. Raikou looks quite neat too thanks to its simpler, almost catlike attitude.
For me it's a tie between Raikou and Entei. I used to like Suicune a lot back during the early Gen II days, but in recent times I've lost some interest it in.
Entei's my favorite because it was the first roaming Pokemon that I found when playing Gold. I didn't catch it because it fled but it was still a cool moment.
I like all three big cats but Suicune's the one that I like the most because it had a bigger part to play in Crystal and in the cartoon compared to Entei and Raikou. :]
You know, I'm sort of stuck between Raikou and Suicune. I voted for the latter though because he's more iconic due to Crystal, so that edges him up a bit. Entei had a huge role in the 3rd Pokemon movie so I like him too, just not as much.