Frederic-104 is one of the few surviving members of the Spartan-II project. He began his life as a worthless peasant on the UEG colony (lol colon) of Ballast, became a slave warrior child at the age of six, and then became a slave super-warrior at the age of 14. Jul ‘Mdama is the leader of one of the most dangerous Covenant remnant factions active after the Human-Covenant war. He began his life as a worthless egg on the Sangheili homeworld of Sanghelios, became an elder of Bekan Keep at the age of whenever, and became a shipmaster at the age of whenever after whenever. These are two very, very different characters. For example, they both are mortal enemies; Fred is a member of a group holding the sole existence of preserving mankind(more like the UNSC but still), Jul is the leader of a group holding the sole existence of destroying mankind. For another example, they both are different species; Fred is a genetically augmented human, Jul is a four-jawed lizard person dinosaur thingy.
However, despite their insanely divergent existences, Jul ‘Mdama and Frederic-104 may hold a stronger, more common relationship than what has been previously concluded. Because in Halo 5: Guardians, Fred’s voice actor is Travis Willingham.
Willingham is the same voice actor for Jul ‘Mdama in Spartan Ops.
This leaves a lingering suspicion: could Fred and Jul be…the same? Well, it may be far-fetched, but it’s certainly possible.
Look at how Fred and Jul both have similar-ish backgrounds; both of them were abducted by ONI, which changed their lives forever. In Halo: Half Of Halo’s Expanded Media Because We’re Always Looking For Creative Ways To Retell The Story Of Reach, Fred was abducted from his home and forever separated from his family. In Halo: Glasslands, Jul ‘Mdama was abducted by Naomi-010 and brought to an ONI facility at Trevelyan, where he’d be tortured and experimented on (while his wife, Raia, would die in the Servants of the Abiding Truth’s attack on ‘Vadam Keep).
Now, let’s look at their appearances. In Halo 5: Guardians, Fred and Jul BOTH wear blue-colored armor. Fred’s shade of blue may be a tad bit lighter, but the similarity is present nonetheless.
In terms of relationships with others, Fred and Jul have both forged an alliance with Catherine Halsey that has strengthened their positions on the battlefield. For Fred, Halsey was the reason he became a Spartan; she created Spartan Project II, selected him for abduction, and had him trained and augmented. For Jul, Halsey allied with him after the events of Spartan Ops and has been an invaluable asset to his power; Halsey helped him secure both halves of the Janus Key, and is currently helping him claim the untold wealth of Forerunner secrets at the Absolute Record.
We’ll be finding out the truth in October.