Asgard archaea have been found in a diverse range of habitats, primarily in anoxic conditions, including hydrothermal vents, marine an d freshwater sediments. These conditions support microbial interactions that are also observed in Asgard superphylum but so far are unexplained. Metabolism of Asgard archeae is very versatile. Some phyla are capable of degradation of fatty and other organi c acids, proteins and carbohydrates. These organisms often ferment so that they can produce acetate, lactate or ethanol. Moreover, they reduce CO 2 via one of two Wood Ljungdahl (WL) pathways, while some use both of the m. The latest discovered phylum Helarc haeota has specific metabolism because it encodes for methyl CoM reductase like enzymes (Mcr) so it has potential for hydrocarbon oxidation. Some phyla were found to harbor complete set of genes for RuBisCo types III and IV. Recently, new Asgard archea pig ments are identified heliorhodopsin and schizorhodopsin. Some of the archea are also involved in nitrogen and sulfur cycling. Most of them are obligately anaerobic, while archaeal lineage Heimdallarchaeia has potentially facultative aerobic metabolism. A sgard archaea genome encoded for numerous eukaryotic signature proteins (ESPs) that were previously considered to be eukaryotic specific. The most significant ESPs are for cytoskeleton, such as actin, tubulin a nd profilin homologues and ESPs for membrane t rafficking system such as small GTPases and vesicle coat components. Developed DNA sequencing technologies and me tagenomic approaches provide us datasets about new archaeal lineages. New phylogenetic analysis place eukaryotes within the Asgard superphylum, more closely related to the phyllum Heimdalla rchaeota. All these discoveries help in understanding of eukaryogenesis and proposing new models for this key evolutionary event.