Power and transformation could be themes. Given the 'ultimates' and 'oc' in the title, it might be about Hela becoming more powerful or transforming into a new form.
Power dynamics is a common theme. Hela is a very powerful character, so exploring how an OC interacts with her in terms of power, whether they are in awe of her power, or try to gain power from her, is often seen.
I'm not entirely sure as the title is rather unclear. It could potentially be a fanfic about a character named Hela with some kind of ultimate form, and perhaps the '3610x oc' might refer to an overclocked (oc) setting related to a system or device within the context of the fanfic. But without reading it, it's just speculation.
Since it's a fanfic, it's difficult to say exactly what it's about without reading it. However, 'ultimates hela' gives the idea that it's centered around a particular interpretation of Hela. The '1610' might be a specific numbering within a series or a reference to a particular setting. The 'x oc' indicates that there is an original character involved. It could be a story of how this original character interacts with Hela in the 'ultimates' context, perhaps they become allies or enemies, or they go through some sort of transformation together.
The title suggests that the main characters are Hela from the Ultimates in a 1610 context and an original character. Hela is often depicted as a strong and intimidating figure. The original character, which is the creation of the fanfic author, will play a crucial role as well. Their personalities, goals, and backstories will shape the story. It could be that the oc has a unique ability that catches Hela's attention, or perhaps the oc has a mission that involves dealing with Hela in some way.
Another option is to look for well - known fanfic authors who write in the Marvel universe. Some of them might have dabbled in 'ultimates hela x oc' stories. You can start by checking out the works of authors who have a reputation for writing interesting character relationships. You could also follow fanfic review blogs or YouTube channels that might cover this type of fanfic and recommend some good ones.
A common theme is power dynamics. Since Hela is very powerful, exploring how an OC can interact with her in terms of power is often seen. For example, whether the OC is intimidated by her power or tries to gain power from her.
One possible theme could be redemption. The angel, as a symbol of good, might be involved in redeeming a character who has strayed from the right path. Another theme could be the struggle between good and evil. The angel would represent good, and there could be opposing forces in the story that it has to face.
One possible theme could be power. Given the empire setting, Anika might be seeking power, or dealing with those in power. Another theme could be identity, as she is an original character and may be finding out who she really is within this new world.
One possible theme could be self - discovery. The OC may enter Marie Kanker's world and through their relationship, both characters learn more about themselves. Another theme could be acceptance. They might come from different backgrounds or have different personalities, but they learn to accept each other.
One possible theme could be family. Since it's related to 'Cheaper by the Dozen 2', the family aspect is likely to be important. Charlie's experiences within his large family and how an OC might interact with the family could be explored. Another theme could be friendship. Charlie might form new friendships with OCs, and the story could show the development and challenges of those friendships.