The Tokyo Drift of Kingsman franchise
Funny when you think that it's exactly like Fast & Furious. The first one was an unexpected hit, the second one was too over-the-top silly but a commercial success, the third one (this movie and Tokyo Drift) is the outlier, trying new and different things but with limited returns.
And the fourth one will be back to the original casts and characters. I'd predict the fifth movie will have The Rock joining in.