As a big fan of the Universal Century Timeline in Gundam, I am loving the references that Gundam Unicorn makes to past series. In the first movie, the creators bring the idea of a young man, Banagher Links, coming into contact with a Gundam by faith to become its pilot. It was done before with Amuro Ray in Gundam 0079 and Kamille Bidan in Gundam Z, but it evokes cool nosalgic moments.
In the second movie Char returns; though, I am not convinced if he is the real Casval Rem Deikun. I am seeing Full Frontal as a combination of the Char from Gundam Z and Char's Counterattack. I was pleasantly surprised to learn that Marida Cruz is one of the clones of Elpeo Puru from Gundam ZZ. I detest the back stabbing of Anaheim Electronics, but it reminded of Gundam 0083.
The third movie contined to have references of Gundam Z, Gundam ZZ and Gundam 0083. On the other hand, movie four, set on Earth, reminded me of Gundam: The 8th MS Team. Movie four reminded me that there are good and bad people on both sides of the conflict. I was also very touched by the idea that people in space had dreams of happiness, just like averyone who remained on Earth, and saw Zeon as their only hope to accomplish this.
In the end, the first four movies of Gundam Unicorn clarifly some of the questions left unanswered by the previous series. Above all, I am being remainded of why I love Gundam and the Universal Century Timeline so much. I have great hopes for the fifth and sixth movies.