There is a diversity of BIONICLE combiner sets (sets made by combining multiple individual sets together) for various groups including Toa, Matoran, Bohrok, Rahkshi, Dark Hunters, and a number of Rahi species, listed here. They're encountered in the physical sets, in the comics and even in some of the movies.
Instructions for building some of these combiner sets can be found in the manuals for each of the individual sets used in making them. Which combiner sets are these?
This can be the format we use for a community wiki
"official" name:
Set(s) Release Date:
Set(s) required:
Model Picture:
Link to instructions:
"official" name: Akamai
Set(s) Release Date: 2001~
Set(s) required: Tahu, Onua, and Pohatu(8531)
Model Picture:
Link to instructions: n/a
"official" name: Wairuha
Set(s) Release Date: 2001
Set(s) required: Gali(8533), Kopaka(8536), and Lewa(8535)
Model Picture:
Link to instructions: N/A
"official" name: Mata Nui Cow
Set(s) Release Date: 2001
Set(s) required: Pohatu(8531) and Gali(8533)
Model Picture:
Link to instructions: http://www.bzpower.com/Imaging/stories/mukau_instructions.jpg
"official" name: Mata Nui Fishing Bird
Set(s) Release Date: 2002
Set(s) required: Kohrak Va(8551) and Nuhvok Va(8555)
Model Picture:
Link to instructions: http://club.lego.com/en-us/BuildIt/BuildingInstructions/fishing.aspx (link now dead)
"official" name: Bohrok Va Kaita 1
Set(s) Release Date: 2001
Set(s) required: Gahlok Va(8550), Kohrak Va(8551) and Lehvak Va(8552)
Model Picture:
Link to instructions: n/a
"official" name: Bohrok Va Kaita 2
Set(s) Release Date: 2001
Set(s) required: Pahrak Va(8553), Tahnok Va(8554) and Nuhvok Va(8555)
Model Picture:
Link to instructions: n/a
"official" name: Bohrok Kaita Ja
Set(s) Release Date: 2002~
Set(s) required: Lehvak(8564), Kohrak(8565), and Gahlok(8562)
Model Picture:
Link to instructions: N/A
"official" name: Bohrok Kaita Za
Set(s) Release Date: 2002~
Set(s) required: Bohrok(8561), Tahnok(8563), and Pahrak(8560)
Model Picture:
Link to instructions:
"official" name: Wairuha Nuva
Set(s) Release Date: 2003~
Set(s) required: Gali Nuva(8570), Lewa Nuva(8567), and Kopaka Nuva(8571)
Model Picture:
Link to instructions: N/A
"official" name: Akamai Nuva
Set(s) Release Date: 2003~
Set(s) required: Tahu Nuva(8572), Onua Nuva(8566), and Pohatu Nuva(8568)
Model Picture:
Link to instructions: n/a
"official" name: Bohrok Kaita Ja-Kal
Set(s) Release Date: 2003~
Set(s) required: Lehvak-Kal, Kohrak-Kal, and Gahlok-Kal
Model Picture:
Link to instructions: N/A
"official" name: Rahkshi Kaita Za
Set(s) Release Date: 2003~
Set(s) required: Turahk(8592), Lerahk(8589) and Kurahk(8588)
Model Picture:
Link to instructions: N/A
"official" name: Rahkshi Kaita Vo
Set(s) Release Date: 2003~
Set(s) required: Panrahk(8587), Guurahk(8590) and Vorahk(8591)
Model Picture:
Link to instructions: N/A
