agent

/aɡent/

Cases

SingularPluralWhen to use it
nominativeagentthe agentagentlethe agentsthe plain dictionary form — the doer of the sentence
genitiveagentnithe agent'sagentlenithe agents'the owner — whose it is
accusativeagentnithe agent (as the object)agentlenithe agents (as the object)a specific, known object — whom or what
dativeagentgeto the agentagentlegeto the agentsdirection or recipient — to where, to whom
locativeagentdeat / in the agentagentledeat / in the agentswhere it is; also having — mende bar, "I have it"
ablativeagentdenfrom the agentagentledenfrom the agentswhere it comes from; also "than" when comparing
When to use each case
nominative
the plain dictionary form — the doer of the sentence
genitive
the owner — whose it is
accusative
a specific, known object — whom or what
dative
direction or recipient — to where, to whom
locative
where it is; also having — mende bar, "I have it"
ablative
where it comes from; also "than" when comparing

The endings are the same ones the pronouns wear — that page explains when each case is used.

With an owner

One ownedSeveral owned
myagentimmy agentagentlerimmy agents
youragentingyour agentagentleringyour agents
his / heragentihis / her agentagentlerihis / her agents
ouragentibizour agentagentleribizour agents
you all'sagentigizyou all's agentagentlerigizyou all's agents
theiragentleritheir agentagentleritheir agents

The overlap in the last rows is real, not a mistake: agentleri can mean "his / her agents", "their agent", or "their agents" — context decides.