Understanding how to properly assert legal capacity in court is crucial—especially when representing a trust or estate. Many well-meaning plaintiffs unknowingly sabotage their cases by blending fiduciary roles with personal appearances like "pro per" or "in propria persona," triggering instant dismissal. Courts consistently hold that only licensed attorneys may represent legal entities, and failing to distinguish roles invites confusion and legal rejection. This article breaks down what combinations are lawful, what mistakes to avoid, and how to protect your standing by appearing strictly in a fiduciary capacity. It’s not just about getting heard—it’s about being recognized with legal force and precision.