Marguerit Maida was a highly experienced mercenary hired by Paul Torgal to protect the Degasi from pirate raids. Marguerit and Paul did not get along well, they argued a lot about where to set up a habitat, Marguerit wished to go deeper into the sea, whilst Paul wanted to remain on the Floating Island. In the end Marguerit had her way, and they set up habitats in the Jelly Shroom Caves and later, the Deep Grand Reef, Paul allowed this to happen because, despite being the captain, he knew that himself and Bart needed her to survive.
Marguerit's considerable level of experience was demonstrated on multiple occasions, firstly was Marguerit wrestling Stalkers and taking their teeth from them by force, she also brought a Reaper Leviathan close to death. Marguerit was last seen clinging onto the unknown leviathan class creature responsible for the destruction of the Deep Grand Reef Abandoned Seabase, having stabbed a jagged piece of metal into its neck.
Marguerit and Bart seem to get along, and it is highly obvious that she prefers him over his father. An example of this is when Maida planned to leave the Torgals while they were sleeping, take what she needed and go off on her own. However, while expressed relief at leaving Paul, she expressed remorse at leaving Bart, claiming "he's not so bad". Whether their friendship caused her to stay is unknown. Throughout their time on the planet, their relationship is further explored, with Marguerit capturing specimens for Bart to study. When Marguerit found a Precursor Artifact in the ocean, she gave it to Bart to study, showing that she trusts him. However, when Bart realized that they were infected with an unknown virus, she went to extreme measures of capturing specimens for him, although he did not agree with some of her ways of doing so. Nonetheless, the two shared a friendly relationship.
The complete opposite of Marguerit's relationship with Bart, the two shared a hostile relationship. With Marguerit often doing things her own way, and refusing to do things Paul's way. An example of this is when Maida wanted to move to the Jelly Shroom Caves, with Paul disagreeing with her multiple times. She was aware of Paul's dislike towards her and Bart's friendship, which she chose to ignore. She also ignored his frantic reactions to her actions, such as bringing back a severely injured Reaper Leviathan on the back of their Cyclops, as she merely stated Bart needed a test subject.