Dynamic Entry/Playing With

Basic Trope: A previously unseen character makes himself known with a dramatic attack.

Straight: Emperor Evulz has overwhelmed Bob, who laid battered on the ground. Evulz raised his sword to deal the final strike, when suddenly Alice crashed from the window and delivered a kick to Evulz' face with much gusto.
Exaggerated:
- Alice's kick made Evulz' head explode into leaky visceral bits of brain-matters, blood, and bone-pieces.
- Alice jumped through space time riding on a whale just to deliver this kick, and the surrounding environment doesn't fare well.
Downplayed: Alice's kick didn't do enough damage to Evulz, who was armor-clad from head to toe. It did distract him, though.
Justified: Alice is masterful in using the element of surprise.
Inverted:
- After he overwhelmed Bob, Evulz threw a force-bolt to Alice, who was hiding and waiting for a chance to snipe him.
- A character uses a powerful attack move that also results in them leaving the scene.
Subverted: Alice crashed in with a kick, and Evulz promptly dodged.
Double Subverted: But Alice did an impossible kung-fu manuver, and kick him with her other feet. Bet he didn't see that one coming.
Parodied: Alice uses the Dynamic Entry every time she enters a room or building, even in everyday normal life.
Zig Zagged: Alice crashed in with a kick, which Evulz dodged. She tried to restart her attack with her other feet, but missed or was also dodged.
Averted:
- All the Nakama fought Evulz at the same time.
- A character enters a room in a normal way.
Enforced: Deus Ex Machina.
Lampshaded:

Bob: "Oh wow, even I didn't see that one coming."

Invoked: ???
Exploited: EVERY. SINGLE. ATTACK.
Defied: Alice had a sniper rifle next to her and could see evuls through the window.
Discussed: "Man, Alice really likes breaking through things to deliver a kick."
Conversed: "She came out of nowhere! Why didn't she attack before?"

Suddenly, a link back to Dynamic Entry!