A guild group is a team in which the majority of the team are members of the same guild. Though a guild group can be formed in any area of the game, it only has an impact in Heroes' Ascent. If it is a guild group in HA, the team will be referred to as the name of the guild instead of the name of the party leader. If there are heroes on the team, there only needs to be a majority among human players. If you add a member of the team to the guild and create a guild majority, it will show up as a guild group in the next match. If the entire team is comprised of members of the guild, it is referred to as a full guild group.