Complex sentence: In the post-credits scene, Jonny and Plank, enraged after the kids attacked and turned against them, vow revenge on them by abandoning their superhero personas and adopting new super villain alter-egos, "The Gourd" and "Timber the Dark Shard".
Split into simpler sentences: In the post-credits scene, Jonny and Plank, enraged after the kids attacked and turned against them, vow revenge on them and abandon their superhero personas. They also adopt the super villain alter-egos "The Gourd" and "Timber the Dark Shard".