Unity is a subtheme of Bionicle that consists of 3 sets that ran from 2015 to 2016. Most sets were released in 2016 which accounted for 2 sets. As of today, the average annual growth of sets in Bionicle Unity is approximately 11.8% per year.
Most valuable Bionicle Unity set
71312 Ekimu the Mask Maker $227.12
Largest Bionicle Unity set
71311 Kopaka and Melum 171 pieces
Most owned Bionicle Unity set
70795 Mask Maker vs. Skull Grinder
In the BIONICLE reboot that started in 2015 and ran until 2016, one of the primary themes was the concept of 'Unity'. This idea was particularly prominent in the 2016 storyline. The theme of Unity was central to the Toa's quests and challenges in 2016, emphasizing collaboration, combined strength, and the idea that they were stronger together than they were individually.
3 sets

71311 Kopaka and Melum

Theme / Subtheme Bionicle / Unity
Year 2016
Pieces 171
Availability Retired
71311 LEGO Bionicle Unity Kopaka and Melum
Retail $24.99
Value $173.46
Growth  +594.1%
Annual growth 13.6%

71312 Ekimu the Mask Maker

Theme / Subtheme Bionicle / Unity
Year 2016
Pieces 94
Availability Retired
71312 LEGO Bionicle Unity Ekimu the Mask Maker
Retail $14.99
Value $227.12
Growth  +1415.1%
Annual growth 19.7%

70795 Mask Maker vs. Skull Grinder

Theme / Subtheme Bionicle / Unity
Year 2015
Pieces 171
Availability Retired
70795 LEGO Bionicle Unity Mask Maker vs. Skull Grinder
Retail $29.99
Value $93.71
Growth  +212.5%
Annual growth 10.1%