Motto

Motto — Jessie's, James' and Meowth's usually rhymed introduction, mainly used as running gag.

The Beginning Motto
Jessie: To protect the world from devastation!

James: To unite all peoples within our nation!

Jessie: To denounce the evils of truth and love!

James: To extend our reach to the stars above!

Jessie: Jessie!

James: James!

Jessie: Team Rocket, blasts off at the speed of light!

James: Surrender now or prepare to fight!

Meowth: Meowth, that's right!

S1E4, Challenge of the Samurai
It was a first time, when Team Rocket used this lines before the motto:

Jessie: Prepare for trouble!

James: Make it double!

Since this episode they started to use it regularly.

S1E5, Showdown in Pewter City
Jessie: To protect the world from devastation!

James: To unite all peoples within our nation!

Jessie and James: To denounce the evils of truth and love, to extend our reach to the stars above!

Jessie: Jessie!

James: James!

Meowth: Meowth!

Meowth stopped them, because they were digging a trap.

S1E6, Clefairy and the Moon Stone
When they met up with Ash, his friends and scientist Seymour Brock said "We should stop them before they cause any more trouble!" and they started motto like this:

Jessie: Trouble?

James: Make them double!

S1E8, The Path to the Pokémon League
Jessie: Prepare for trouble! James: Make that double! Jessie: To protect the world from devastation!

James: To unite all peoples within our nation!

Jessie and James: To denounce the evils of truth and love, to extend our reach to the stars above!

Jessie: Jessie!

James: James!

Jessie: Team Rocket, blasts off at the speed of light!

James: Surrender now or prepare to fight!

Meowth: Meowth, that's right!

S1E8, The School of Hard Knocks
Jessie: To protect the world from devastation!

James: To unite all peoples within our nation!

Jessie and James: To denounce the evils of truth and love, to extend our reach to the stars above!

Jessie: Jessie!

James: James!

Jessie: Team Rocket, blasts off at the speed of light!

James: Surrender now or prepare to fight!

Meowth: Meowth!

S1E10, Bulbasaur and the Hidden Village
Jessie: To protect the world from devastation!

James: To unite all peoples within our nation!

Jessie: To denounce the evils of truth and love!

James: To extend our reach to the stars above!

Jessie: Team Rocket, blasts off at the speed of light!

James: Surrender now or prepare to fight!

Meowth: That's right!