Can you recommend some good Castiel time travel fanfiction?

Sure. 'AUs are Awesome' is a great one. It takes the characters out of their normal setting into a high - school AU. It's really interesting to see how their personalities play out in that different context.

One popular female Castiel fanfiction is 'The Angel's New Form' which explores her relationships within the Supernatural universe in a unique way. It delves into how her female form changes the dynamics with other characters like Dean and Sam.

A lesser - known but very interesting kidnapped Castiel fanfiction is 'Finding Castiel'. It has a unique take on the kidnapping plot, where Castiel is not only physically kidnapped but also has his memories manipulated. The way the author unfolds the mystery and the other characters' efforts to bring him back is quite engaging.

One great Castiel fanfiction is 'The Road So Far'. It delves deep into Castiel's internal struggles as he tries to understand his place among the Winchesters. Another is 'Wings of Redemption' which focuses on Castiel's journey to regain his grace and his relationships in the process. There's also 'Castiel's Quest' that takes the character on an adventure to save Heaven while dealing with his loyalty to the brothers.

Well, 'The Angel and the Hunter' is a popular Castiel Supernatural fanfiction. It delves deep into the relationship between Castiel and Dean. It shows how their bond develops over different situations and challenges they face. Also, 'Castiel's New Powers' is quite exciting as it explores Castiel getting some new and unexpected powers and how he copes with them.

Well, I really like 'Little Brother Castiel's Hidden Powers'. In this fanfiction, Castiel discovers some unique powers he has as the little brother. It's full of action and mystery. Also, 'Castiel: The Little Brother's Bond' is a heartwarming story about the special bond he forms with his brothers. It shows how his role as the little brother shapes the family dynamics. You should check them out if you're into Castiel fanfiction.

Sure. 'A Little Slice of Heaven' is a great one. It delves deep into the relationship between Dean and Castiel in a really heart - warming way. It shows their growth together and how they support each other through various challenges in the Supernatural world.

I really liked 'In the Shadows with Meg and Castiel'. It's a more introspective piece that explores their individual struggles and how they come to rely on each other. The descriptions in the fanfiction are really vivid, making you feel like you're right there in the Supernatural universe with them.

There's also 'Castiel's Connection'. In this fanfiction, the author does an amazing job of portraying the bond between Dean, Castiel and the reader. It's filled with action and some really heart - warming moments. For example, there are scenes where they work together to fight off demons and in the process, their relationship deepens.

Well, 'Castiel and the Elements of Harmony' is also worth checking out. In this fanfiction, Castiel gets involved with the powerful Elements of Harmony in the MLP universe. His angelic powers and knowledge play a big role as he teams up with the ponies to face a common threat. It's a great read for fans of both Supernatural and MLP as it blends the two universes so well.