A lesser - known but really engaging one is 'The Mentalist in the MCU'. Here, Patrick Jane somehow gets transported into the Marvel Cinematic Universe. It's fascinating to see how his mentalist abilities interact with the superheroes and villains in that universe.
There's also 'Mentalist and Supernatural Crossover'. This fanfic brings in elements from 'Supernatural'. It has the characters from 'The Mentalist' getting involved in a case that has a supernatural twist, which makes for an exciting read as they try to figure out things beyond the normal realm of crime - solving.
Sure. 'The Redemption of Patrick Jane' is a great one. It delves deep into Jane's character development after the show's events. Another interesting one is 'Jane and Lisbon's New Adventure' which focuses on their relationship post - the series finale. There's also 'The Mentalist: Unfinished Business' that brings back some of the show's most interesting cases in a new light.
There's also 'Baby Steps in The Mentalist World'. This one focuses on the mystery - solving aspect while also dealing with the challenges of taking care of a baby. It combines the elements of the show well. The characters' reactions to the baby are really interesting to read about.
One great 'the mentalist fanfic' is 'Redemption'. It focuses on the character development of Patrick Jane after the main series events. Another one is 'The Unseen Cases' which delves into new mysteries that Jane and the team could have tackled. And 'Jane's New Beginnings' is also good as it shows Jane starting a new phase in his life while still being true to his old self.
One common theme is the clash of different investigative styles. For example, when a character from 'The Mentalist' crosses over with a detective from another show, their methods of solving crimes might be very different. Another theme is the exploration of new worlds. If it's a crossover with a science - fiction or fantasy show, the mentalist character has to adapt to a whole new set of rules and environments.
I'm not sure specifically which 'The Mentalist' Jisbon rated M fanfics are the best. You could try searching on popular fanfic platforms like Archive of Our Own. They usually have a rating and tagging system that can help you filter out the relevant ones.
One popular 'hitman crossover fanfiction' could be the ones where Hitman crosses over with Assassin's Creed. In these, you often see the two different assassin - like characters interact, with their unique skills and moral compasses clashing or aligning in interesting ways.
There's a 'felicity crossover fanfiction' called 'Felicity Meets the Legends'. In this one, Felicity somehow gets involved with the Legends of Tomorrow crew. It's interesting to see how her character interacts with the time - traveling misfits. Her logical thinking clashes and also blends well with their more chaotic ways.
One interesting arcane crossover fanfiction is 'Arcane Meets Harry Potter'. It creates a really unique scenario where characters from Arcane enter the magical world of Harry Potter. The author does a wonderful job of blending the different magical elements and cultures from both universes. It's full of unexpected twists and turns as the characters from Arcane adapt to the new and strange world of Hogwarts and the wizarding community.
One great 'the incredibles crossover fanfiction' is the one where they cross over with the 'Big Hero 6'. It's really interesting to see the Incredibles' superpowers interact with Baymax and the gang's high - tech gadgets.
One place to find valerian crossover fanfiction could be Archive of Our Own (AO3). There are often various fanfics that combine the Valerian universe with other elements. Just search for 'valerian crossover' on the site, and you'll be presented with a list of available works.