Modifiers matching invalid:

• socially-unintelligent,
• crippled,
• brilliant,
• rigid,
• gangly,
• stubborn,
• kind-hearted,
• gentle,
• innocent,
• inspirational,
• inspiring,
• socially-unaware,
• weak,
• socially-awkward,
• aloof,
• optimistic,
• insightful,
• sympathetic,
• scientific,
• bumbling,
• good-hearted,
• arrogant,

Simple categories matching kind-hearted:

• friend,
• child,
• adventurer,
• psychiatrist,
• person,
• king,
• snob,
• robot,
• hero,
• aristocrat,
• invalid,