Who can you get out of the legendary dogs with Blastoise on Pokemon fire red?

You cannot catch any of the Legendary Dogs (Entei, Raikou, and Suicune) with Blastoise in Pokemon Fire Red.

Here's why:

* The Legendary Dogs are not available in Fire Red. They are exclusive to Pokemon Silver, Gold, and Crystal.

* Blastoise is a Water-type Pokemon. The Legendary Dogs are Fire (Entei), Electric (Raikou), and Water (Suicune). This means Blastoise would be ineffective against Entei and Raikou, and even against Suicune, it wouldn't be ideal.

To catch these legendary Pokemon, you would need to trade your Fire Red save file to a game that features them (Silver, Gold, or Crystal).