These are all space probes that have visited or investigated comets throughout history, mostly from the Halley Armarda, a group of probes launched to investigate Halley's Comet during its 1986 approach.
Bear in mind the portraits are very stylised so certain identification is kind of difficult.
Across the top from left to right:
Japan's contribution to the Armada. A pair of identical probes with slightly different instrument payloads; both carried a solar wind experiment and Suisei also carried a UV imager.
A 2005 NASA probe sent to comet Tempel 1. A small impactor was released on approach to the comet and measurements taken of the resultant ejected material. The portrait doesn't look much like Deep Impact, but it is identified in the video at 3:07
A joint project by ESA and NASA; originally launch as the International Sun-Earth Explorer-3 (ISEE-3) and placed at the Earth-Sun L1 point to study solar winds. Re-designated in 1982 to the International Cometary Explorer (ICE) and sent to flyby both comet Giacobini–Zinner and Halley's comet.
ESA's main probe in the Halley Armada which made a close pass of 596 km from the comet's nucleus.
A pair of Russian probes that made Halley flybys after gravity assists from Venus where they inserted descent modules into the Venusian atmosphere.
A 1999 NASA mission to collect and return dust samples from the coma of comet Wild.
The lander module of ESA's Rosetta mission. Philae puts on the hard hat and backpack at 9:20 in the video.
And of course, across the bottom: