Ant - Man could use his shrinking ability to dodge the Sentry's attacks easily. He can become so small that the Sentry's sensors have a hard time detecting him. Then he can suddenly enlarge himself and deliver a powerful punch.
Ant - Man might also use his shrinking and growing abilities in combination with the environment. For instance, if there are any large structures around, he can shrink, move inside the structure, and then grow, causing the structure to collapse on the Kree Sentry, trapping it or at least stunning it long enough for him to make his next move.
In this fanfiction, a plot twist could be that Ant - Man teams up with an unexpected ally during the fight against the Kree Sentry. This ally could be a character from another part of the Marvel universe who has a unique ability that, when combined with Ant - Man's powers, gives them the upper hand against the Sentry.
His power over water could be used for stealth operations. For example, he could create a mist to hide agents or himself. Also, for defense, he could raise a water wall around SHIELD facilities.
When Ant - Man puts on the Wasp suit in fanfiction, his powers and the suit's capabilities could combine in various ways. The suit might have built - in weaponry that could be amplified by his shrinking power. For example, if the suit has energy blasters, when he shrinks, the blasters could become more concentrated and powerful. Also, his ability to communicate with ants could be altered. The Wasp suit may have its own communication network with other insects, and when he uses it, his connection with ants could be disrupted or enhanced in new ways.
Well, Hulk's strength would be useful for physical protection. He could stand guard over Hermione and fend off any attackers. Black Widow's espionage skills would come in handy for finding out more about who tortured Hermione and why. Hawkeye could use his long - range shooting skills to keep a perimeter around Hermione. And Doctor Strange, if he were part of this scenario, could use his magic to heal any physical or mental wounds Hermione had from the torture.
Well, Naruto's ability to sense chakra could be translated into sensing threats in a different way in the SHIELD universe. He might be able to detect hidden enemies or dangerous substances. His healing ability, which is a result of his chakra control, could also be used to treat injured SHIELD agents. And his experience in fighting powerful and diverse opponents in his own world would give him an edge in strategizing against threats in the SHIELD world.
White Tiger has great combat skills and agility. Spider - Man has his super strength, web - slinging ability, and spider - sense. In a fight, Spider - Man could use his webs to create barriers or traps for the enemies, while White Tiger could use her agility to quickly move around and attack from unexpected angles. Their combined powers would make them a very formidable team.
Spider - Man's agility and web - slinging could be used in tandem with the Guardians' ranged attacks. For example, he could web up enemies and then Star - Lord could shoot at them while they're immobilized. Or Gamora could use Spider - Man as a distraction, swinging him around with his webs to confuse opponents, and then she could move in for a stealthy strike.
Ant Man could still use his shrinking ability to slip out of his bonds if they are not too tight. He could also communicate with ants to get help. The Wasp, on the other hand, might be able to use her wings to create vibrations that could loosen the ropes or whatever is tying her up.
First, you need to study the existing lore about Kree Sentry in official sources. Then, in the fanfic context, consider its broken state. Maybe analyze how it was damaged, what parts are malfunctioning. This could involve looking at its power systems, mechanical components if it has any, and how they interact in a non - working state.
His power over water could also be used in a more spiritual way. He could communicate with the water spirits and ask them for help in healing Artemis. The water spirits might then infuse the water Percy uses with their own magic, making it more potent for healing. Percy could then use this enchanted water to heal Artemis' internal injuries as well as external ones.